drm/bridge: dw-hdmi-i2s: set the channel allocation

setup the channel allocation provided by the generic hdmi-codec driver
Reviewed-by: NJonas Karlman <jonas@kwiboo.se>
Signed-off-by: NJerome Brunet <jbrunet@baylibre.com>
Reviewed-by: NNeil Armstrong <narmstrong@baylibre.com>
Signed-off-by: NNeil Armstrong <narmstrong@baylibre.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190812120726.1528-6-jbrunet@baylibre.com

drivers/gpu/drm/bridge/synopsys/dw-hdmi-i2s-audio.c

@@ -85,6 +85,7 @@ static int dw_hdmi_i2s_hw_params(struct device *dev, void *data,
 
 	dw_hdmi_set_sample_rate(hdmi, hparms->sample_rate);
 	dw_hdmi_set_channel_count(hdmi, hparms->channels);
+	dw_hdmi_set_channel_allocation(hdmi, hparms->cea.channel_allocation);
 
 	hdmi_write(audio, inputclkfs, HDMI_AUD_INPUTCLKFS);
 	hdmi_write(audio, conf0, HDMI_AUD_CONF0);