[ARM] MX2: Add IRQ_GPIOE definition

The MX2 has 5 gpio ports, IRQ_GPIOE was missing so far.
Signed-off-by: NSascha Hauer <s.hauer@pengutronix.de>

arch/arm/plat-mxc/include/mach/iomux-mx1-mx2.h

@@ -392,5 +392,6 @@ extern int mxc_gpio_setup_multiple_pins(const int *pin_list, unsigned count,
 #define IRQ_GPIOB(x)  (IRQ_GPIOA(32) + x)
 #define IRQ_GPIOC(x)  (IRQ_GPIOB(32) + x)
 #define IRQ_GPIOD(x)  (IRQ_GPIOC(32) + x)
+#define IRQ_GPIOE(x)  (IRQ_GPIOD(32) + x)
 
 #endif /* _MXC_GPIO_MX1_MX2_H */