pinctrl: exynos: Mark exynos_irq_demux_eint as inline

The exynos_irq_demux_eint utility function is used in chained IRQ
handler for EINT16-31 to handle multiplexed interrupts. Inlining it
should improve the performance a bit.

Signed-off-by: Tomasz Figa <t.figa@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Kukjin Kim <kgene.kim@samsung.com>
diff --git a/drivers/pinctrl/pinctrl-exynos.c b/drivers/pinctrl/pinctrl-exynos.c
index 5648971..49ef5a2 100644
--- a/drivers/pinctrl/pinctrl-exynos.c
+++ b/drivers/pinctrl/pinctrl-exynos.c
@@ -376,7 +376,7 @@
 	chained_irq_exit(chip, desc);
 }
 
-static void exynos_irq_demux_eint(int irq_base, unsigned long pend,
+static inline void exynos_irq_demux_eint(int irq_base, unsigned long pend,
 					struct irq_domain *domain)
 {
 	unsigned int irq;