pwm: jz4740: Another few conversions to regmap_{set,clear}_bits()

Similar to commit 7d919999 ("pwm: jz4740: Use
regmap_{set,clear}_bits") convert two more regmap_update_bits() calls to
regmap_{set,clear}_bits() which were missed back then.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@baylibre.com>
Reviewed-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20240606164047.534741-5-u.kleine-koenig@baylibre.com


Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>