Cleanup NRF s140 Softdevice variants (#4252)

Note: This idea is originally from @caveman99 and should be
credited as such. Submitting as a separate PR so the work in
meshtastic/firmware#4148 can be a bit cleaner and Seeed boards
can build while that work is ongoing.

The nrf52 boards that depend on the v7 softdevice all use the same
code and linker files. Rather than duplicate the code, keep it
all together with the platform.

src/platform/nrf52/softdevice/ble_err.h

@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) Nordic Semiconductor ASA
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright notice, this
+ *    list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form, except as embedded into a Nordic
+ *    Semiconductor ASA integrated circuit in a product or a software update for
+ *    such product, must reproduce the above copyright notice, this list of
+ *    conditions and the following disclaimer in the documentation and/or other
+ *    materials provided with the distribution.
+ *
+ * 3. Neither the name of Nordic Semiconductor ASA nor the names of its
+ *    contributors may be used to endorse or promote products derived from this
+ *    software without specific prior written permission.
+ *
+ * 4. This software, with or without modification, must only be used with a
+ *    Nordic Semiconductor ASA integrated circuit.
+ *
+ * 5. Any software provided in binary form under this license must not be reverse
+ *    engineered, decompiled, modified and/or disassembled.
+ *
+ * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS
+ * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
+ * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+  @addtogroup BLE_COMMON
+  @{
+  @addtogroup  nrf_error
+  @{
+    @ingroup BLE_COMMON
+  @}
+
+  @defgroup ble_err General error codes
+  @{
+
+  @brief General error code definitions for the BLE API.
+
+  @ingroup BLE_COMMON
+*/
+#ifndef NRF_BLE_ERR_H__
+#define NRF_BLE_ERR_H__
+
+#include "nrf_error.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* @defgroup BLE_ERRORS Error Codes
+ * @{ */
+#define BLE_ERROR_NOT_ENABLED (NRF_ERROR_STK_BASE_NUM + 0x001)         /**< @ref sd_ble_enable has not been called. */
+#define BLE_ERROR_INVALID_CONN_HANDLE (NRF_ERROR_STK_BASE_NUM + 0x002) /**< Invalid connection handle. */
+#define BLE_ERROR_INVALID_ATTR_HANDLE (NRF_ERROR_STK_BASE_NUM + 0x003) /**< Invalid attribute handle. */
+#define BLE_ERROR_INVALID_ADV_HANDLE (NRF_ERROR_STK_BASE_NUM + 0x004)  /**< Invalid advertising handle. */
+#define BLE_ERROR_INVALID_ROLE (NRF_ERROR_STK_BASE_NUM + 0x005)        /**< Invalid role. */
+#define BLE_ERROR_BLOCKED_BY_OTHER_LINKS                                                                                         \
+    (NRF_ERROR_STK_BASE_NUM + 0x006) /**< The attempt to change link settings failed due to the scheduling of other links. */
+/** @} */
+
+/** @defgroup BLE_ERROR_SUBRANGES Module specific error code subranges
+ *  @brief Assignment of subranges for module specific error codes.
+ *  @note For specific error codes, see ble_<module>.h or ble_error_<module>.h.
+ * @{ */
+#define NRF_L2CAP_ERR_BASE (NRF_ERROR_STK_BASE_NUM + 0x100) /**< L2CAP specific errors. */
+#define NRF_GAP_ERR_BASE (NRF_ERROR_STK_BASE_NUM + 0x200)   /**< GAP specific errors. */
+#define NRF_GATTC_ERR_BASE (NRF_ERROR_STK_BASE_NUM + 0x300) /**< GATT client specific errors. */
+#define NRF_GATTS_ERR_BASE (NRF_ERROR_STK_BASE_NUM + 0x400) /**< GATT server specific errors. */
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+#endif
+
+/**
+  @}
+  @}
+*/