hwmon: (isl28022, nct7363) 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 <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Guenter Roeck <[email protected]>

Author: Bo Liu

drivers/hwmon/isl28022.c

@@ -301,7 +301,7 @@ static const struct regmap_config isl28022_regmap_config = {
 	.writeable_reg = isl28022_is_writeable_reg,
 	.volatile_reg = isl28022_is_volatile_reg,
 	.val_format_endian = REGMAP_ENDIAN_BIG,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.use_single_read = true,
 	.use_single_write = true,
 };

drivers/hwmon/nct7363.c

@@ -391,7 +391,7 @@ static const struct regmap_config nct7363_regmap_config = {
 	.val_bits = 8,
 	.use_single_read = true,
 	.use_single_write = true,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.volatile_reg = nct7363_regmap_is_volatile,
 };