ASoC: amd: use do_div rather than 64 bit division to fix 32 bit builds

ERROR: "__aeabi_uldivmod" [sound/soc/amd/snd-soc-acp-pcm.ko] undefined!

64-bit divides require special operations to avoid build errors on 32-bit
systems.

[Reword the commit message to make it clearer - Alex]

fixes: 61add814 (ASoC: amd: Report accurate hw_ptr during dma)
Signed-off-by: Guenter Roeck <groeck@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/678919Reviewed-by: Jason Clinton <jclinton@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/681618Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/amd/acp-pcm-dma.c

@@ -856,12 +856,11 @@ static snd_pcm_uframes_t acp_dma_pointer(struct snd_pcm_substream *substream)
 	if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
 		if (bytescount > rtd->renderbytescount)
 			bytescount = bytescount - rtd->renderbytescount;
-		pos =  bytescount % buffersize;
 	} else {
 		if (bytescount > rtd->capturebytescount)
 			bytescount = bytescount - rtd->capturebytescount;
-		pos = bytescount % buffersize;
 	}
+	pos = do_div(bytescount, buffersize);
 	return bytes_to_frames(runtime, pos);
 }