hw/mcu/nordic: Add common GPIO HAL for nRF MCUs

Common HAL package will be extended in the future
to provide common HAL API for other peripherals.
This also makes GPIO HAL use the API provided by nrfx,
instead of using MCUs registers directly.

hw/mcu/nordic/nrf51xxx/include/mcu/nrf51_hal.h

@@ -24,19 +24,7 @@
  extern "C" {
 #endif
 
-/* Helper functions to enable/disable interrupts. */
-#define __HAL_DISABLE_INTERRUPTS(x)                     \
-    do {                                                \
-        x = __get_PRIMASK();                            \
-        __disable_irq();                                \
-    } while(0);
-
-#define __HAL_ENABLE_INTERRUPTS(x)                      \
-    do {                                                \
-        if (!x) {                                       \
-            __enable_irq();                             \
-        }                                               \
-    } while(0);
+#include 'nrf_hal.h'
 
 struct nrf51_uart_cfg {
     int8_t suc_pin_tx;                          /* pins for IO */

hw/mcu/nordic/nrf51xxx/pkg.yml

@@ -27,8 +27,7 @@ pkg.keywords:
 
 pkg.deps:
     - "@apache-mynewt-core/hw/mcu/nordic"
-    - "@apache-mynewt-core/hw/cmsis-core"
-    - "@apache-mynewt-core/hw/hal"
+    - "@apache-mynewt-core/hw/mcu/nordic/nrf_common"
 
 pkg.ign_files.'!MCU_COMMON_STARTUP || SPLIT_LOADER':
     - gcc_startup_cm0.s