mfd: wm5102: Update defaults to match patch

Registers which have defaults and are updated by the patch file should
have their defaults updated to match the value set by the patch file,
otherwise incorrect values will be read from the cache.

Signed-off-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>