media: i2c: imx334: Fix runtime PM handling in remove function

media: i2c: imx334: Fix runtime PM handling in remove function

pm_runtime_suspended() only checks the current runtime PM status and does
not modify it, making it ineffective in this context. This could result in
improper power management if the device remains active when removed.

This patch fixes the issue by introducing a check with
pm_runtime_status_suspended() to determine if the device is already
suspended. If it is not, it calls imx334_power_off() to power down the
device and then uses pm_runtime_set_suspended() to correctly update the
runtime PM status to suspended.

Signed-off-by: Tarang Raval <tarang.raval@siliconsignals.io>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>