msm: board-msm7627a-wlan: Add AR600X power-up sequence.

Add AR600X power-up sequence with msm devices like FFA7627a,
QRD7627a and QRD8625.

Change-Id: I64232ac4bfd77143f6df5b0929698efe3f2c011a
Signed-off-by: Santosh Sajjan <ssajjan@codeaurora.org>
diff --git a/arch/arm/mach-msm/devices-msm7x2xa.h b/arch/arm/mach-msm/devices-msm7x2xa.h
index a59ade3..be6a645 100644
--- a/arch/arm/mach-msm/devices-msm7x2xa.h
+++ b/arch/arm/mach-msm/devices-msm7x2xa.h
@@ -25,4 +25,5 @@
 extern struct platform_device msm7x27a_device_clkctl;
 void __init msm8625_init_irq(void);
 void __init msm8625_map_io(void);
+int  ar600x_wlan_power(bool on);
 #endif