feat: H7 support (#5738)

Co-authored-by: Richard Li <richard.li@ces.hk>
Co-authored-by: philmoz <phil.a.mitchell@gmail.com>
Co-authored-by: raphaelcoeffic <1050031+raphaelcoeffic@users.noreply.github.com>

radio/src/telemetry/telemetry.cpp

@@ -452,7 +452,7 @@ void logTelemetryWriteByte(uint8_t data)
 }
 #endif
 
-OutputTelemetryBuffer outputTelemetryBuffer __DMA;
+OutputTelemetryBuffer outputTelemetryBuffer __DMA_NO_CACHE;
 
 #if defined(LUA)
 Fifo<uint8_t, LUA_TELEMETRY_INPUT_FIFO_SIZE> * luaInputTelemetryFifo = NULL;