raspberrypi: Allow build without audio

Signed-off-by: Daniel Schaefer <[email protected]>

Author: JohnAZoidberg

ports/raspberrypi/supervisor/internal_flash.c

@@ -99,11 +99,15 @@ void port_internal_flash_flush(void) {
     // Make sure we don't have an interrupt while we do flash operations.
     common_hal_mcu_disable_interrupts();
     // and audio DMA must be paused as well
+    #if CIRCUITPY_AUDIOCORE
     uint32_t channel_mask = audio_dma_pause_all();
+    #endif
     flash_range_erase(CIRCUITPY_CIRCUITPY_DRIVE_START_ADDR + _cache_lba, SECTOR_SIZE);
     flash_range_program(CIRCUITPY_CIRCUITPY_DRIVE_START_ADDR + _cache_lba, _cache, SECTOR_SIZE);
     _cache_lba = NO_CACHE;
+    #if CIRCUITPY_AUDIOCORE
     audio_dma_unpause_mask(channel_mask);
+    #endif
     common_hal_mcu_enable_interrupts();
 }