arm: mach-snapdragon: add pinctrl driver for db820c

Add pinctrl driver for Dragonboard820c, currently with only
one mux func to initialize pins for serial console.

Signed-off-by: Ramon Fried <ramon.fried@gmail.com>
diff --git a/arch/arm/mach-snapdragon/pinctrl-snapdragon.h b/arch/arm/mach-snapdragon/pinctrl-snapdragon.h
index c47d988..24f8863 100644
--- a/arch/arm/mach-snapdragon/pinctrl-snapdragon.h
+++ b/arch/arm/mach-snapdragon/pinctrl-snapdragon.h
@@ -26,5 +26,6 @@
 };
 
 extern struct msm_pinctrl_data apq8016_data;
+extern struct msm_pinctrl_data apq8096_data;
 
 #endif