Merge pull request #703 from perigoso/efm32gg

EFM32 Family Support

Author: hathach

.gitmodules

@@ -113,3 +113,6 @@
 [submodule "lib/CMSIS_5"]
 	path = lib/CMSIS_5
 	url = https://github.com/ARM-software/CMSIS_5.git
+[submodule "hw/mcu/silabs/cmsis-dfp-efm32gg12b"]
+	path = hw/mcu/silabs/cmsis-dfp-efm32gg12b
+	url = https://github.com/cmsis-packs/cmsis-dfp-efm32gg12b

hw/bsp/board_mcu.h

@@ -119,6 +119,9 @@
 
 #elif CFG_TUSB_MCU == OPT_MCU_RP2040
   #include "pico.h"
+  
+#elif CFG_TUSB_MCU == OPT_MCU_EFM32GG || CFG_TUSB_MCU == OPT_MCU_EFM32GG11 || CFG_TUSB_MCU == OPT_MCU_EFM32GG12
+  #include "em_device.h"
 
 #else
   #error "Missing MCU header"