gpio: mpc8xxx: Convert mpc8xxx_gpio_chip.lock to raw_spinlock
gpio: mpc8xxx: Convert mpc8xxx_gpio_chip.lock to raw_spinlock

mpc8xxx_gpio_chip.lock needs to be a real spinlock in preempt-rt.
Especially the interrupt related functions can not be converted to a
sleeping lock.

Signed-off-by: Alexander Stein <dbef83f64948dc68aad31596bbf6991154a9d730@systec-electronic.com>
Acked-by: Uwe Kleine-König <181323dd666a182bc2d953e52d0ac3ab54cd8391@pengutronix.de>
Signed-off-by: Linus Walleij <9cd9d802d23c0ed5e224beabf4ae4a5c478746ef@linaro.org>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs