regmap: regcache_rbtree_{set,get}_register: Use regcache_{set,get}_val

Use regcache_{set,get}_val in regcache_rbtree_{set,get}_register instead of
re-implementing its functionality.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Acked-by: Dimitris Papastamos <dp@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

drivers/base/regmap/regcache-rbtree.c

@@ -46,45 +46,14 @@ static unsigned int regcache_rbtree_get_register(
 	struct regcache_rbtree_node *rbnode, unsigned int idx,
 	unsigned int word_size)
 {
-	unsigned int val;
-
-	switch (word_size) {
-	case 1: {
-		u8 *p = rbnode->block;
-		val = p[idx];
-		return val;
-	}
-	case 2: {
-		u16 *p = rbnode->block;
-		val = p[idx];
-		return val;
-	}
-	default:
-		BUG();
-		break;
-	}
-	return -1;
+	return regcache_get_val(rbnode->block, idx, word_size);
 }
 
 static void regcache_rbtree_set_register(struct regcache_rbtree_node *rbnode,
 					 unsigned int idx, unsigned int val,
 					 unsigned int word_size)
 {
-	switch (word_size) {
-	case 1: {
-		u8 *p = rbnode->block;
-		p[idx] = val;
-		break;
-	}
-	case 2: {
-		u16 *p = rbnode->block;
-		p[idx] = val;
-		break;
-	}
-	default:
-		BUG();
-		break;
-	}
+	regcache_set_val(rbnode->block, idx, val, word_size);
 }
 
 static struct regcache_rbtree_node *regcache_rbtree_lookup(