feat: compile option to disable MCU check (#4988)

radio/src/CMakeLists.txt

@@ -55,6 +55,7 @@ option(IMRC_RELEASE "Used to build IMRC released firmware" OFF)
 option(HARDWARE_TRAINER_MULTI "Allow multi trainer" OFF)
 option(BOOTLOADER "Include Bootloader" ON)
 option(FWDRIVE "Attach also firmware drive with USB" OFF)
+option(DISABLE_MCUCHECK "Disable MCU check at start" OFF)
 
 if(PCB STREQUAL X9D+ AND PCBREV STREQUAL 2019)
   option(USBJ_EX "Enable USB Joystick Extension" OFF)
@@ -374,6 +375,10 @@ if(FWDRIVE)
   add_definitions(-DFWDRIVE)
 endif()
 
+if(DISABLE_MCUCHECK)
+  add_definitions(-DDISABLE_MCUCHECK)
+endif()
+
 set(SRC
   ${SRC}
   opentx.cpp

radio/src/opentx.cpp

@@ -1573,7 +1573,9 @@ int main()
   modulePortInit();
   pulsesInit();
 
+#if !defined(DISABLE_MCUCHECK)
   checkValidMCU();
+#endif
 
 #if defined(PCBHORUS)
   if (!IS_FIRMWARE_COMPATIBLE_WITH_BOARD()) {