gpio: mvebu: Convert generic irqchip locking to guard()

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: "Uwe Kleine-König" <ukleinek@kernel.org>
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Bartosz Golaszewski <brgl@bgdev.pl>
1 file changed