rtc: s5m: fix a typo: peding -> pending

Fix this minor typo, and adjust the a related incorrect alignment to
avoid a checkpatch error.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: André Draszik <andre.draszik@linaro.org>
Link: https://lore.kernel.org/r/20250409-s2mpg10-v4-28-d66d5f39b6bf@linaro.org


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