ARM: OMAP: switch to gpio_direction_input

More switchover to the cross-platform GPIO interface:
use gpio_direction_input(), not an OMAP-specific call.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
diff --git a/arch/arm/mach-omap1/fpga.c b/arch/arm/mach-omap1/fpga.c
index 0499538..40cf504 100644
--- a/arch/arm/mach-omap1/fpga.c
+++ b/arch/arm/mach-omap1/fpga.c
@@ -178,7 +178,7 @@
 	 * gpio.[ch]
 	 */
 	omap_request_gpio(13);
-	omap_set_gpio_direction(13, 1);
+	gpio_direction_input(13);
 	set_irq_type(OMAP_GPIO_IRQ(13), IRQ_TYPE_EDGE_RISING);
 	set_irq_chained_handler(OMAP1510_INT_FPGA, innovator_fpga_IRQ_demux);
 }