[realtek-ambz2] Add GDB init command

cores/realtek-ambz2/base/lt_api.c

@@ -7,7 +7,7 @@ extern uint8_t lt_uart_port;
 
 void lt_init_family() {
 	// make the SDK less verbose by default
-	ConfigDebugErr	= 0;
+	ConfigDebugErr	= _DBG_MISC_ | _DBG_FAULT_ | _DBG_BOOT_;
 	ConfigDebugWarn = 0;
 	ConfigDebugInfo = 0;
 	lt_uart_port	= LT_UART_DEFAULT_PORT;