msm: board: Add GSBI4 UARTDM support for MSM9615

Uart hsl console uses GSBI4 on MSM9615. Add support for it.

Signed-off-by: Rohit Vaswani <rvaswani@codeaurora.org>
diff --git a/arch/arm/mach-msm/devices.h b/arch/arm/mach-msm/devices.h
index 69450ad..2547fb4 100644
--- a/arch/arm/mach-msm/devices.h
+++ b/arch/arm/mach-msm/devices.h
@@ -66,6 +66,8 @@
 extern struct platform_device apq8064_device_ssbi_pmic1;
 extern struct platform_device apq8064_device_ssbi_pmic2;
 
+extern struct platform_device msm9615_device_uart_gsbi4;
+
 extern struct platform_device msm_device_sdc1;
 extern struct platform_device msm_device_sdc2;
 extern struct platform_device msm_device_sdc3;