msm: board-msm7x27a: initialize WLAN gpio pin

add support for WLAN gpio pin to input low at boot time.

Signed-off-by: pankaj kumar <pakuma@codeaurora.org>
diff --git a/arch/arm/mach-msm/board-msm7x27a.c b/arch/arm/mach-msm/board-msm7x27a.c
index ba9d15f..e3915c2 100644
--- a/arch/arm/mach-msm/board-msm7x27a.c
+++ b/arch/arm/mach-msm/board-msm7x27a.c
@@ -103,7 +103,7 @@
 		.gpio_base		= GPIO_CORE_EXPANDER_BASE,
 		.oscio_is_gpo		= false,
 		.io_pullup_ena		= 0,
-		.io_pulldn_ena		= 0,
+		.io_pulldn_ena		= 0x02,
 		.io_open_drain_ena	= 0xfef8,
 		.irq_summary		= -1,
 	},