Disable specific warnings to mitigate compilation problems with KEEP_INTERMEDIATES=yes. (#20339)

platforms/chibios/drivers/audio_dac_basic.c

@@ -19,6 +19,10 @@
 #include "ch.h"
 #include "hal.h"
 
+// Need to disable GCC's "tautological-compare" warning for this file, as it causes issues when running `KEEP_INTERMEDIATES=yes`. Corresponding pop at the end of the file.
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wtautological-compare"
+
 /*
   Audio Driver: DAC
 
@@ -247,3 +251,5 @@ void audio_driver_start(void) {
     }
     gptStartContinuous(&AUDIO_STATE_TIMER, 2U);
 }
+
+#pragma GCC diagnostic pop