backlight: gpio_backlight: Drop output GPIO direction check for initial power state

stable inclusion
from stable-v5.10.195
commit 934d29b9fa912ff6028d4abb8c787bdac8f4fa80
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I95JOC

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=934d29b9fa912ff6028d4abb8c787bdac8f4fa80



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[ Upstream commit fe1328b5 ]

So, let's drop output GPIO direction check and only check GPIO value to set
the initial power state.

Fixes: 706dc681 ("backlight: gpio: Explicitly set the direction of the GPIO")
Signed-off-by: Liu Ying <victor.liu@nxp.com>
Reviewed-by: Andy Shevchenko <andy@kernel.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20230721093342.1532531-1-victor.liu@nxp.com


Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>