kconfig: add ble_phy_x feature and mapping

cpu/nrf52/Kconfig

@@ -12,6 +12,8 @@ config CPU_FAM_NRF52
 # So far, NimBLE netif does not support nrf51 platforms, so we use a dedicated
 # feature to mark this
     select HAS_BLE_NIMBLE_NETIF
+# All nrf52s support the 2Mbit PHY mode
+    select HAS_BLE_PHY_2MBIT
     select HAS_CORTEXM_MPU
     select HAS_CPU_NRF52
     select HAS_PERIPH_I2C_RECONFIGURE
@@ -33,6 +35,7 @@ config CPU_MODEL_NRF52811XXAA
     bool
     select CPU_CORE_CORTEX_M4
     select CPU_FAM_NRF52
+    select HAS_BLE_PHY_CODED
     select HAS_RADIO_NRF802154
     select HAS_PERIPH_UART_NONBLOCKING
 
@@ -40,6 +43,7 @@ config CPU_MODEL_NRF52820XXAA
     bool
     select CPU_CORE_CORTEX_M4
     select CPU_FAM_NRF52
+    select HAS_BLE_PHY_CODED
     select HAS_RADIO_NRF802154
     select HAS_PERIPH_UART_NONBLOCKING
 
@@ -52,6 +56,7 @@ config CPU_MODEL_NRF52833XXAA
     bool
     select CPU_CORE_CORTEX_M4F
     select CPU_FAM_NRF52
+    select HAS_BLE_PHY_CODED
     select HAS_RADIO_NRF802154
     select HAS_PERIPH_UART_NONBLOCKING
 
@@ -59,6 +64,7 @@ config CPU_MODEL_NRF52840XXAA
     bool
     select CPU_CORE_CORTEX_M4F
     select CPU_FAM_NRF52
+    select HAS_BLE_PHY_CODED
     select HAS_RADIO_NRF802154
     select HAS_PERIPH_UART_NONBLOCKING
 

cpu/nrf5x_common/Kconfig

@@ -33,6 +33,16 @@ config HAS_BLE_NIMBLE_NETIF
     help
         Indicates that NimBLE netif is supported on the current platform.
 
+config HAS_BLE_PHY_2MBIT
+    bool
+    help
+        Indicates that the BLE radio supports the 2Mbit PHY mode
+
+config HAS_BLE_PHY_CODED
+    bool
+    help
+        Indicates that the BLE radio supports the CODED PHY mode
+
 config HAS_RADIO_NRFBLE
     bool
     select HAVE_NRF5X_RADIO