Input: tps65219-pwrbutton - use regmap_set_bits()

regmap_set_bits() is equivalent to regmap_update_bits() if mask == val.
The probe function uses regmap_clear_bits() to enable irqs, so
symmetrically make use of regmap_set_bits() to disable them. There is no
semantic difference.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Reviewed-by: Markus Schneider-Pargmann <msp@baylibre.com>
Link: https://lore.kernel.org/r/20230605161458.117361-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>