Merge pull request #2996 from jeromecoutant/PR_STM32_arduino

Add Arduino form factor for DISCO_F746NG and NUCLEO_F767ZI

Author: sg-

targets/targets.json

@@ -866,6 +866,7 @@
         "extra_labels": ["STM", "STM32F7", "STM32F767", "STM32F767ZI"],
         "supported_toolchains": ["ARM", "uARM", "GCC_ARM", "IAR"],
         "default_toolchain": "ARM",
+        "supported_form_factors": ["ARDUINO"],
         "detect_code": ["0818"],
         "device_has": ["ANALOGIN", "ANALOGOUT", "CAN", "I2C", "I2CSLAVE", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "STDIO_MESSAGES", "TRNG"],
         "features": ["LWIP"],
@@ -1075,6 +1076,7 @@
         "extra_labels": ["STM", "STM32F7", "STM32F746", "STM32F746NG"],
         "supported_toolchains": ["ARM", "uARM", "GCC_ARM", "IAR"],
         "default_toolchain": "ARM",
+        "supported_form_factors": ["ARDUINO"],
         "detect_code": ["0815"],
         "device_has": ["ANALOGIN", "ANALOGOUT", "CAN", "I2C", "I2CSLAVE", "INTERRUPTIN", "LOWPOWERTIMER", "PORTIN", "PORTINOUT", "PORTOUT", "PWMOUT", "RTC", "SERIAL", "SERIAL_ASYNCH", "SLEEP", "SPI", "SPISLAVE", "STDIO_MESSAGES", "TRNG"],
         "features": ["LWIP"],