pwm: iqs620a: Explicitly set .polarity in .get_state()

stable inclusion
from stable-v5.10.179
commit 1c3a1211370dcaf509bac72ff258c813cc42a6eb
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8C809

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=1c3a1211370dcaf509bac72ff258c813cc42a6eb



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[ Upstream commit b20b0971 ]

The driver only supports normal polarity. Complete the implementation of
.get_state() by setting .polarity accordingly.

Fixes: 6f0841a8 ("pwm: Add support for Azoteq IQS620A PWM generator")
Reviewed-by: Jeff LaBundy <jeff@labundy.com>
Link: https://lore.kernel.org/r/20230228135508.1798428-4-u.kleine-koenig@pengutronix.de


Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>