[ARM] 5023/1: Fix broken gpio interrupts on ep93xx

Change gpio_direction_output to gpio_direction_input in
ep93xx_gpio_irq_type. Fixes broken gpio interrupts.

Signed-off-by: Ryan Mallon <ryan@bluewatersys.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-ep93xx/core.c b/arch/arm/mach-ep93xx/core.c
index 8bc1872..1d7bca6 100644
--- a/arch/arm/mach-ep93xx/core.c
+++ b/arch/arm/mach-ep93xx/core.c
@@ -280,7 +280,7 @@
 	const int port = gpio >> 3;
 	const int port_mask = 1 << (gpio & 7);
 
-	gpio_direction_output(gpio, gpio_get_value(gpio));
+	gpio_direction_input(gpio);
 
 	switch (type) {
 	case IRQT_RISING: