regulator: pca9450: convert to use maple tree register cache

The maple tree register cache is based on a much more modern data structure
than the rbtree cache and makes optimisation choices which are probably
more appropriate for modern systems than those made by the rbtree cache.

Signed-off-by: Bo Liu <liubo03@inspur.com>
Link: https://msgid.link/r/20240320085740.4604-7-liubo03@inspur.com
Signed-off-by: Mark Brown <broonie@kernel.org>

Author: Bo Liu

drivers/regulator/pca9450-regulator.c

@@ -53,7 +53,7 @@ static const struct regmap_config pca9450_regmap_config = {
 	.val_bits = 8,
 	.volatile_table = &pca9450_volatile_regs,
 	.max_register = PCA9450_MAX_REGISTER - 1,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 /*