ASoC: cs35l41: Move cs35l41_otp_unpack to shared code

ASoC: cs35l41: Move cs35l41_otp_unpack to shared code

BugLink: https://bugs.launchpad.net/bugs/1965496
ASoC and HDA will do the same cs35l41_otp_unpack, so move it
to shared code

Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211217115708.882525-3-tanureal@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
(cherry picked from commit fe120d4cb6f6cd03007239e7c578b8703fe6d336)
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Acked-by: Andrea Righi <andrea.righi@canonical.com>
Acked-by: Paolo Pisati <paolo.pisati@canonical.com>