Stop sounds when suspended (#11553)

* fix stopping audio on suspend vs. startup sound

* trim firmware size

* fix stuck audio on startup (ARM)

tmk_core/common/chibios/suspend.c

@@ -12,6 +12,10 @@
 #include "led.h"
 #include "wait.h"
 
+#ifdef AUDIO_ENABLE
+#    include "audio.h"
+#endif /* AUDIO_ENABLE */
+
 #ifdef BACKLIGHT_ENABLE
 #    include "backlight.h"
 #endif
@@ -65,6 +69,9 @@ void suspend_power_down(void) {
 #if defined(RGBLIGHT_SLEEP) && defined(RGBLIGHT_ENABLE)
     rgblight_suspend();
 #endif
+#ifdef AUDIO_ENABLE
+    stop_all_notes();
+#endif /* AUDIO_ENABLE */
 
     suspend_power_down_kb();
     // on AVR, this enables the watchdog for 15ms (max), and goes to