ASoC: da7210: Fencepost error in reg cache read

An index equal to the array size may not be accessed.

Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

sound/soc/codecs/da7210.c

@@ -181,7 +181,7 @@ static const u8 da7210_reg[] = {
 static inline u32 da7210_read_reg_cache(struct snd_soc_codec *codec, u32 reg)
 {
 	u8 *cache = codec->reg_cache;
-	BUG_ON(reg > ARRAY_SIZE(da7210_reg));
+	BUG_ON(reg >= ARRAY_SIZE(da7210_reg));
 	return cache[reg];
 }