mfd: max77686: 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: Mark Brown <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Reviewed-by: Chanwoo Choi <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

Author: broonie

drivers/mfd/max77686.c

@@ -108,7 +108,7 @@ static const struct regmap_config max77802_regmap_config = {
 	.precious_reg = max77802_is_precious_reg,
 	.volatile_reg = max77802_is_volatile_reg,
 	.name = "max77802-pmic",
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 static const struct regmap_irq max77686_irqs[] = {