boards: 96b_argonkey: adapt to the board configuration guidelines

As per default board configuration guidelines, this commit updates
96Boards Argonkey board.

Following changes are done:

- Enable exposed SPI1
- Update yaml file
- Only enable basic peripherals in board defconfig
- Add exposed peripherals in board Kconfig

Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>

boards/arm/96b_argonkey/96b_argonkey.dts

@@ -51,6 +51,10 @@
 	status = "ok";
 };
 
+&spi1 {
+	status = "ok";
+};
+
 &spi2 {
 	status = "ok";
 

boards/arm/96b_argonkey/96b_argonkey.yaml

@@ -5,6 +5,8 @@ arch: arm
 toolchain:
   - zephyr
   - gnuarmemb
+ram: 256
+flash: 1024
 supported:
   - gpio
   - i2c

boards/arm/96b_argonkey/96b_argonkey_defconfig

@@ -1,5 +1,4 @@
 CONFIG_ARM=y
-CONFIG_BOARD_96B_ARGONKEY=y
 CONFIG_SOC_SERIES_STM32F4X=y
 CONFIG_SOC_STM32F412CG=y
 CONFIG_CORTEX_M_SYSTICK=y
@@ -17,15 +16,6 @@ CONFIG_PINMUX=y
 # enable GPIO
 CONFIG_GPIO=y
 
-# enable I2C
-CONFIG_I2C=y
-
-# enable SPI
-CONFIG_SPI=y
-
-# enable LED
-CONFIG_LED=y
-
 # clock configuration
 CONFIG_CLOCK_CONTROL=y
 

boards/arm/96b_argonkey/Kconfig.defconfig

@@ -13,30 +13,36 @@ config BOARD
 if UART_CONSOLE
 
 config UART_STM32_PORT_1
-	default y
+	def_bool y
 
 endif # UART_CONSOLE
 
 if I2C
 
 config I2C_1
-	default y
+	def_bool y
 
 config I2C_2
-	default y
+	def_bool y
 
 config I2C_3
-	default y
+	def_bool y
 
 config I2C_STM32_INTERRUPT
-	default y
+	def_bool y
 
 endif # I2C
 
 if SPI
 
+config SPI_1
+	def_bool y
+
 config SPI_2
-	default y
+	def_bool y
+
+config SPI_STM32_INTERRUPT
+	def_bool y
 
 endif # SPI
 
@@ -51,7 +57,7 @@ choice LSM6DSL_TRIGGER_MODE
 endchoice
 
 config LSM6DSL_SENSORHUB
-	default y
+	def_bool y
 
 choice LSM6DSL_EXTERNAL_SENSOR_0
 	default LSM6DSL_EXT0_LIS2MDL