Fix default IRQ pins on ESP8266 that prevent MCU from boot (#1076)

* Derive default interrupt from configured instead of default pin

Derive DEFAULT_RFM69_IRQ_NUM from MY_RFM69_IRQ_PIN instead of
DEFAULT_RFM69_IRQ_PIN so that _NUM does not have to be defined
if _PIN is redefined

* Change default IRQ pin for RFM69/95 on ESP8266 to GPIO5=D1

The originally defined pin GPIO2 prevent ESP8266 from booting,
since it has to be pulled high for booting and DIO0 from the
RFM69 is defaul low.
For this reason, it is improbably that anyone is using the default
and would be affected by this change.

Author: kvoit

drivers/RFM69/new/RFM69_new.h

@@ -78,7 +78,7 @@
 #define DEFAULT_RFM69_IRQ_PIN			(2)												//!< DEFAULT_RFM69_IRQ_PIN
 #endif
 #elif defined(ARDUINO_ARCH_ESP8266)
-#define DEFAULT_RFM69_IRQ_PIN			(2)												//!< DEFAULT_RFM69_IRQ_PIN
+#define DEFAULT_RFM69_IRQ_PIN			(5)												//!< DEFAULT_RFM69_IRQ_PIN
 #elif defined(ARDUINO_ARCH_ESP32)
 #warning not implemented yet
 #elif defined(ARDUINO_ARCH_SAMD)

drivers/RFM69/old/RFM69_old.h

@@ -41,15 +41,15 @@
 #else
 #define DEFAULT_RFM69_IRQ_PIN			(2)													//!< DEFAULT_RFM69_IRQ_PIN
 #endif
-#define DEFAULT_RFM69_IRQ_NUM			digitalPinToInterrupt(DEFAULT_RFM69_IRQ_PIN)		//!< DEFAULT_RFM69_IRQ_NUM
+#define DEFAULT_RFM69_IRQ_NUM			digitalPinToInterrupt(MY_RFM69_IRQ_PIN)		//!< DEFAULT_RFM69_IRQ_NUM
 #elif defined(ARDUINO_ARCH_ESP8266)
-#define DEFAULT_RFM69_IRQ_PIN			(2)													//!< DEFAULT_RFM69_IRQ_PIN
-#define DEFAULT_RFM69_IRQ_NUM			digitalPinToInterrupt(DEFAULT_RFM69_IRQ_PIN)		//!< DEFAULT_RFM69_IRQ_NUM
+#define DEFAULT_RFM69_IRQ_PIN			(5)													//!< DEFAULT_RFM69_IRQ_PIN
+#define DEFAULT_RFM69_IRQ_NUM			digitalPinToInterrupt(MY_RFM69_IRQ_PIN)		//!< DEFAULT_RFM69_IRQ_NUM
 #elif defined(ARDUINO_ARCH_ESP32)
 #warning not implemented yet
 #elif defined(ARDUINO_ARCH_SAMD)
 #define DEFAULT_RFM69_IRQ_PIN			(2)													//!< DEFAULT_RFM69_IRQ_PIN
-#define DEFAULT_RFM69_IRQ_NUM			digitalPinToInterrupt(DEFAULT_RFM69_IRQ_PIN)		//!< DEFAULT_RFM69_IRQ_NUM
+#define DEFAULT_RFM69_IRQ_NUM			digitalPinToInterrupt(MY_RFM69_IRQ_PIN)		//!< DEFAULT_RFM69_IRQ_NUM
 #elif defined(LINUX_ARCH_RASPBERRYPI)
 #define DEFAULT_RFM69_IRQ_PIN			(22)												//!< DEFAULT_RFM69_IRQ_PIN
 #define DEFAULT_RFM69_IRQ_NUM			DEFAULT_RFM69_IRQ_PIN								//!< DEFAULT_RFM69_IRQ_NUM
@@ -58,7 +58,7 @@
 #define DEFAULT_RFM69_IRQ_NUM			DEFAULT_RFM69_IRQ_PIN								//!< DEFAULT_RFM69_IRQ_NUM
 #elif defined(TEENSYDUINO)
 #define DEFAULT_RFM69_IRQ_PIN			(8)													//!< DEFAULT_RFM69_IRQ_PIN
-#define DEFAULT_RFM69_IRQ_NUM			digitalPinToInterrupt(DEFAULT_RFM69_IRQ_PIN)		//!< DEFAULT_RFM69_IRQ_NUM
+#define DEFAULT_RFM69_IRQ_NUM			digitalPinToInterrupt(MY_RFM69_IRQ_PIN)		//!< DEFAULT_RFM69_IRQ_NUM
 #else
 #define DEFAULT_RFM69_IRQ_PIN			(2)													//!< DEFAULT_RFM69_IRQ_PIN
 #define DEFAULT_RFM69_IRQ_NUM			(2)													//!< DEFAULT_RFM69_IRQ_NUM

drivers/RFM95/RFM95.h

@@ -89,7 +89,7 @@
 #define DEFAULT_RFM95_IRQ_PIN			(2)				//!< DEFAULT_RFM95_IRQ_PIN
 #endif
 #elif defined(ARDUINO_ARCH_ESP8266)
-#define DEFAULT_RFM95_IRQ_PIN			(2)				//!< DEFAULT_RFM95_IRQ_PIN
+#define DEFAULT_RFM95_IRQ_PIN			(5)				//!< DEFAULT_RFM95_IRQ_PIN
 #elif defined(ARDUINO_ARCH_ESP32)
 #warning not implemented yet
 #elif defined(ARDUINO_ARCH_SAMD)