For the benefit of the maple tree's lockdep checking hold the lock while
creating and exiting the cache.
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://patch.msgid.link/20240822-b4-regmap-maple-nolock-v1-2-d5e6dbae3396@kernel.orgSigned-off-by: Mark Brown <broonie@kernel.org>