rtc: pcf8523: fix coding-style issues

Minor modifications for coding-style correctness (tabs, spaces and blank
lines before and after brackets). In total 7 errors, 3 warnings and 1
check where removed from the checkpatch output without damaging code
readability.

Signed-off-by: Javier Carrasco <javier.carrasco@wolfvision.net>
Link: https://lore.kernel.org/r/20230315082021.2104452-2-javier.carrasco@wolfvision.net


Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>