Audio: Volume: Fix condition for identical ramp

The "is_same_volume=true" was returned if target volumes for
all channels are the same. The check omitted the fact that
start volumes for ramp can be different, e.g. one channel is
attenuated while others are 0 dB.

This change fixes the random ignore of volume ramp and smooth
transition when a volume control is changed.

Signed-off-by: Seppo Ingalsuo <seppo.ingalsuo@linux.intel.com>

src/audio/volume/volume.c

@@ -252,7 +252,7 @@ void volume_set_ramp_channel_counter(struct vol_data *cd, uint32_t channels_coun
 	bool is_same_volume = true;
 
 	for (i = 1; i < channels_count; i++) {
-		if (cd->tvolume[0] != cd->tvolume[i]) {
+		if (cd->tvolume[0] != cd->tvolume[i] || cd->volume[0] != cd->volume[i]) {
 			is_same_volume = false;
 			break;
 		}