drm/bridge: icn6211: 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>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20231001-drm-chipone-maple-v1-1-fb3ce5a53710@kernel.org

drivers/gpu/drm/bridge/chipone-icn6211.c

@@ -197,7 +197,7 @@ static const struct regmap_config chipone_regmap_config = {
 	.val_bits = 8,
 	.rd_table = &chipone_dsi_readable_table,
 	.wr_table = &chipone_dsi_writeable_table,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.max_register = MIPI_ATE_STATUS(1),
 };