boards/arm/nrf52xx_boards: makes GPIO_AS_PINRESET common

Kconfig keyword GPIO_AS_PINRESET is common for whole nrf52 series.
This patch move it to the series Kconfig.soc file.

Signed-off-by: Andrzej Puzdrowski <andrzej.puzdrowski@nordicsemi.no>

Author: nvlsianpu

arch/arm/soc/nordic_nrf/nrf52/Kconfig.soc

@@ -47,3 +47,8 @@ config NFCT_PINS_AS_GPIOS
 	  not switch back these pins to NFCT mode. Doing this requires UICR
 	  erase prior to flashing device using the image which has
 	  this option disabled.
+
+config GPIO_AS_PINRESET
+	bool "GPIO as pin reset (reset button)"
+	depends on SOC_SERIES_NRF52X
+	default y

boards/arm/96b_nitrogen/Kconfig

@@ -6,8 +6,4 @@
 
 if BOARD_96B_NITROGEN
 
-config GPIO_AS_PINRESET
-	bool "GPIO as pin reset (reset button)"
-	default y
-
 endif # BOARD_96B_NITROGEN

boards/arm/nrf52840_pca10056/Kconfig

@@ -6,8 +6,4 @@
 
 if BOARD_NRF52840_PCA10056
 
-config GPIO_AS_PINRESET
-	bool "GPIO as pin reset (reset button)"
-	default y
-
 endif # BOARD_NRF52840_PCA10056

boards/arm/nrf52_pca10040/Kconfig

@@ -6,8 +6,4 @@
 
 if BOARD_NRF52_PCA10040
 
-config  GPIO_AS_PINRESET
-	bool "GPIO as pin reset (reset button)"
-	default y
-
 endif # BOARD_NRF52_PCA10040

boards/arm/nrf52_vbluno52/Kconfig

@@ -6,8 +6,4 @@
 
 if BOARD_NRF52_VBLUNO52
 
-config  GPIO_AS_PINRESET
-	bool "GPIO as pin reset (reset button)"
-	default y
-
 endif # BOARD_NRF52_VBLUNO52