ASoC: hdmi-codec: make a function and two arrays static

The function hdmi_codec_eld_chmap and arrays hdmi_codec_stereo_chmaps
and hdmi_codec_8ch_chmaps are local to the source and do not need to
be in global scope, so make them static.

Cleans up sparse warnings:
symbol 'hdmi_codec_eld_chmap' was not declared. Should it be static?
symbol 'hdmi_codec_stereo_chmaps' was not declared. Should it be static?
symbol 'hdmi_codec_8ch_chmaps' was not declared. Should it be static?
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

sound/soc/codecs/hdmi-codec.c

@@ -67,14 +67,14 @@ struct hdmi_codec_cea_spk_alloc {
 };
 
 /* Channel maps  stereo HDMI */
-const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
+static const struct snd_pcm_chmap_elem hdmi_codec_stereo_chmaps[] = {
 	{ .channels = 2,
 	  .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
 	{ }
 };
 
 /* Channel maps for multi-channel playbacks, up to 8 n_ch */
-const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
+static const struct snd_pcm_chmap_elem hdmi_codec_8ch_chmaps[] = {
 	{ .channels = 2, /* CA_ID 0x00 */
 	  .map = { SNDRV_CHMAP_FL, SNDRV_CHMAP_FR } },
 	{ .channels = 4, /* CA_ID 0x01 */
@@ -340,7 +340,7 @@ static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
 	return spk_mask;
 }
 
-void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
+static void hdmi_codec_eld_chmap(struct hdmi_codec_priv *hcp)
 {
 	u8 spk_alloc;
 	unsigned long spk_mask;