cpu/nrfx_common: Add Kconfig symbols

cpu/nrf5x_common/Kconfig

@@ -0,0 +1,57 @@
+# Copyright (c) 2020 HAW Hamburg
+#
+# This file is subject to the terms and conditions of the GNU Lesser
+# General Public License v2.1. See the file LICENSE in the top level
+# directory for more details.
+
+config CPU_COMMON_NRF5X
+    bool
+    select HAS_PERIPH_CPUID
+    select HAS_PERIPH_FLASHPAGE
+    select HAS_PERIPH_FLASHPAGE_RAW
+    select HAS_PERIPH_GPIO
+    select HAS_PERIPH_GPIO_IRQ
+    select HAS_PERIPH_HWRNG
+    select HAS_PERIPH_TEMPERATURE
+    select HAS_PERIPH_UART_MODECFG
+    select HAS_PERIPH_WDT
+    select HAS_PERIPH_WDT_CB
+    select HAS_BLE_NIMBLE
+    select HAS_RADIO_NRFBLE
+    select HAS_RADIO_NRFMIN
+    select HAS_PUF_SRAM
+
+## Definition of specific features
+config HAS_BOOTLOADER_NRFUTIL
+    bool
+    help
+        Indicates that the nRF Util bootloader is being used.
+
+config HAS_BLE_NIMBLE
+    bool
+    help
+        Indicates that the NimBLE stack is supported on the current platform.
+
+config HAS_BLE_NIMBLE_NETIF
+    bool
+    help
+        Indicates that NimBLE netif is supported on the current platform.
+
+config HAS_RADIO_NRFBLE
+    bool
+    help
+        Indicates that a BLE-compatible nRF radio is present.
+
+config HAS_RADIO_NRFMIN
+    bool
+    help
+        Indicates that a radio compatible with the nRF minimal radio driver is
+        present.
+
+config HAS_BLE_NORDIC_SOFTDEVICE
+    bool
+    help
+        Indicates that Nordic SoftDevice support in RIOT has been verified on the
+        current platform.
+
+source "$(RIOTCPU)/cortexm_common/Kconfig"

cpu/nrf5x_common/Makefile.features

@@ -14,4 +14,4 @@ FEATURES_PROVIDED += radio_nrfble
 FEATURES_PROVIDED += radio_nrfmin
 FEATURES_PROVIDED += puf_sram
 
--include $(RIOTCPU)/cortexm_common/Makefile.features
+include $(RIOTCPU)/cortexm_common/Makefile.features

kconfigs/Kconfig.features

@@ -42,11 +42,6 @@ config HAS_BOOTLOADER_ARDUINO
     help
         Indicates that the Arduino bootloader is used.
 
-config HAS_BOOTLOADER_NRFUTIL
-    bool
-    help
-        Indicates that the NRF Util bootloader is used.
-
 config HAS_CPP
     bool
     help