clk: versaclock5: 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>
Link: https://lore.kernel.org/r/20230929-clk-maple-versaclk-v1-3-24dd5b3d8689@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>

Author: broonie

drivers/clk/clk-versaclock5.c

@@ -217,7 +217,7 @@ static bool vc5_regmap_is_writeable(struct device *dev, unsigned int reg)
 static const struct regmap_config vc5_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
-	.cache_type = REGCACHE_RBTREE,
+	.cache_type = REGCACHE_MAPLE,
 	.max_register = 0x76,
 	.writeable_reg = vc5_regmap_is_writeable,
 };