platform: msm_shared: configure HDMI GPIOs

Call target specific API to configure the HDMI GPIOs.

Change-Id: I568b505a07b6f8e187489df070fa2e7bf11b8c98
diff --git a/target/target_display.c b/target/target_display.c
index a4e15e2..4b07cc8 100644
--- a/target/target_display.c
+++ b/target/target_display.c
@@ -105,3 +105,8 @@
 {
 	return 0;
 }
+
+__WEAK int target_hdmi_gpio_ctrl(bool enable)
+{
+	return 0;
+}