fix: compilation without audio or modules (#5103)

radio/src/audio.h

@@ -669,7 +669,7 @@ void playModelName();
 #define AUDIO_FLUSH()            audioQueue.flush()
 #endif
 
-#if defined(SDCARD) & defined(AUDIO)
+#if defined(SDCARD) && defined(AUDIO)
   extern tmr10ms_t timeAutomaticPromptsSilence;
   void playModelEvent(uint8_t category, uint8_t index, event_t event=0);
   #define PLAY_PHASE_OFF(phase)         playModelEvent(PHASE_AUDIO_CATEGORY, phase, AUDIO_EVENT_OFF)

radio/src/telemetry/crossfire.h

@@ -178,6 +178,8 @@ const uint8_t CROSSFIRE_FRAME_PERIODS[] = {
 #define CROSSFIRE_PERIOD(module) INT_CROSSFIRE_PERIOD
 #elif defined(HARDWARE_EXTERNAL_MODULE)
 #define CROSSFIRE_PERIOD(module) EXT_CROSSFIRE_PERIOD
+#else
+#define CROSSFIRE_PERIOD(module) 4000
 #endif
 
 #define CROSSFIRE_TELEM_MIRROR_BAUDRATE   115200