ASoC: fixes to caching implementations

This patch takes fixes a number of bugs in the caching code used by
several ASoC codec drivers. Mostly off-by-one fixes.

Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/codecs/ad1980.c b/sound/soc/codecs/ad1980.c
index c3c5d0e..faf3587 100644
--- a/sound/soc/codecs/ad1980.c
+++ b/sound/soc/codecs/ad1980.c
@@ -109,7 +109,7 @@
 	default:
 		reg = reg >> 1;
 
-		if (reg >= (ARRAY_SIZE(ad1980_reg)))
+		if (reg >= ARRAY_SIZE(ad1980_reg))
 			return -EINVAL;
 
 		return cache[reg];
@@ -123,7 +123,7 @@
 
 	soc_ac97_ops.write(codec->ac97, reg, val);
 	reg = reg >> 1;
-	if (reg < (ARRAY_SIZE(ad1980_reg)))
+	if (reg < ARRAY_SIZE(ad1980_reg))
 		cache[reg] = val;
 
 	return 0;