regulator: Fix parameter declaration and spelling mistake.

Use Complete data type declaration of 'sel' in ti_abb_set_voltage_sel().
Fix spelling of 'are'nt' in comments.

Signed-off-by: Zhang Jiaming <jiaming@nfschina.com>
Link: https://lore.kernel.org/r/20220705071445.21124-1-jiaming@nfschina.com


Signed-off-by: Mark Brown <broonie@kernel.org>