mfd: tps65912: 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]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

Author: broonie

drivers/mfd/tps65912-core.c

@@ -81,7 +81,7 @@ static const struct regmap_access_table tps65912_volatile_table = {
 const struct regmap_config tps65912_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.volatile_table = &tps65912_volatile_table,
 };
 EXPORT_SYMBOL_GPL(tps65912_regmap_config);