leds: aw200xx: 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 <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Lee Jones <[e-mail]>

drivers/leds/leds-aw200xx.c

···
 	.num_ranges = ARRAY_SIZE(aw200xx_ranges),
 	.rd_table = &aw200xx_readable_table,
 	.wr_table = &aw200xx_writeable_table,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 };
 
 static int aw200xx_probe(struct i2c_client *client)