dts/bindings: Add reset and irq gpios to "st,spbtle-rf" yaml

In order to generate GPIO definition for control pin of BlueNRG module
define reset-gpio and irq-gpio in st,spbtle-rf yaml binding.

Add HAS_DTS_SPI_PINS kconfig symbol to control use of the '#define'

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>

drivers/bluetooth/hci/Kconfig

@@ -82,6 +82,8 @@ config BT_SPI_BLUENRG
 	  Enable support for devices compatible with the BlueNRG Bluetooth
 	  Stack. Current driver supports: ST X-NUCLEO BLE series.
 
+if !HAS_DTS_SPI_PINS
+
 config BT_SPI_CHIP_SELECT_DEV_NAME
 	string "Chip Select (CS) line driver name"
 	depends on BT_SPI_BLUENRG
@@ -118,6 +120,8 @@ config BT_SPI_RESET_PIN
 	help
 	  This option specifies the Reset line number on the SPI device
 
+endif # !HAS_DTS_SPI_PINS
+
 config BT_SPI_MAX_CLK_FREQ
 	int "Maximum clock frequency for the HCI SPI interface"
 	default 5000000

dts/Kconfig

@@ -43,6 +43,14 @@ config HAS_DTS_SPI_DEVICE
 	  This option specifies that the target platform supports device tree
 	  configuration for spi devices, like sensors or RF modules.
 
+config HAS_DTS_SPI_PINS
+	bool
+	default n
+	help
+	  This option specifies that the target platform supports device tree
+	  configuration for pin definition of spi devices, like sensors or
+	  RF modules.
+
 config HAS_DTS_USB
 	bool
 	default n

dts/bindings/bluetooth/st,spbtle-rf.yaml

@@ -18,4 +18,13 @@ properties:
     compatible:
       constraint: "st,spbtle-rf"
 
+    irq-gpios:
+      type: compound
+      category: required
+      generation: define, use-prop-name
+
+    reset-gpios:
+      type: compound
+      category: required
+      generation: define, use-prop-name
 ...