mfd: axp20x: 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: wangkaiyuan <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

Author: wangkaiyuan

drivers/mfd/axp20x.c

@@ -422,7 +422,7 @@ static const struct regmap_config axp717_regmap_config = {
 	.wr_table = &axp717_writeable_table,
 	.volatile_table = &axp717_volatile_table,
 	.max_register = AXP717_CPUSLDO_CONTROL,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 static const struct regmap_config axp806_regmap_config = {