clk: cdce925: 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: Stephen Boyd <[e-mail]>

drivers/clk/clk-cdce925.c

···
 		.name = "configuration0",
 		.reg_bits = 8,
 		.val_bits = 8,
-		.cache_type = REGCACHE_RBTREE,
+		.cache_type = REGCACHE_MAPLE,
 	};
 
 	dev_dbg(&client->dev, "%s\n", __func__);