ASoC: hdmi-codec: make const array hdmi_codec_eld_spk_alloc_bits static

Don't populate array hdmi_codec_eld_spk_alloc_bits on the stack but
make it static. Makes the object code smaller by over 260 bytes:

Before:
   text	   data	    bss	    dec	    hex	filename
  10882	   3384	     64	  14330	   37fa	sound/soc/codecs/hdmi-codec.o

After:
   text	   data	    bss	    dec	    hex	filename
  10557	   3440	     64	  14061	   36ed	sound/soc/codecs/hdmi-codec.o
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NMark Brown <broonie@kernel.org>

sound/soc/codecs/hdmi-codec.c

@@ -326,7 +326,7 @@ static int hdmi_eld_ctl_get(struct snd_kcontrol *kcontrol,
 static unsigned long hdmi_codec_spk_mask_from_alloc(int spk_alloc)
 {
 	int i;
-	const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
+	static const unsigned long hdmi_codec_eld_spk_alloc_bits[] = {
 		[0] = FL | FR, [1] = LFE, [2] = FC, [3] = RL | RR,
 		[4] = RC, [5] = FLC | FRC, [6] = RLC | RRC,
 	};