drm/bridge: dpc3433: 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 <broonie@kernel.org>

drivers/gpu/drm/bridge/ti-dlpc3433.c

diff --git a/drivers/gpu/drm/bridge/ti-dlpc3433.c b/drivers/gpu/drm/bridge/ti-dlpc3433.c
index b65632e..ca33481 100644
--- a/drivers/gpu/drm/bridge/ti-dlpc3433.c
+++ b/drivers/gpu/drm/bridge/ti-dlpc3433.c
@@ -100,7 +100,7 @@ static struct regmap_config dlpc_regmap_config = {
 	.max_register		= WR_DSI_PORT_EN,
 	.writeable_noinc_reg	= dlpc_writeable_noinc_reg,
 	.volatile_table		= &dlpc_volatile_table,
-	.cache_type		= REGCACHE_RBTREE,
+	.cache_type		= REGCACHE_MAPLE,
 	.name			= "dlpc3433",
 };