arm/dt: msm8974: hdmi: add p-handle to hdmi tx device node

The pHandle is being added to enable MHL-HDMI interaction
through device tree. So that HDMI Tx can be programmed to
display appropriate video formats in the presence of MHL Tx.
Through this mechanism MHL driver receives a callback to
check HDMI TMDS status later during RAP message transactions.

Change-Id: I57c726cb5a583dbaafa2e1b678211a6ccce4d635
Signed-off-by: Manoj Rao <manojraj@codeaurora.org>
diff --git a/arch/arm/boot/dts/msm8974-fluid.dtsi b/arch/arm/boot/dts/msm8974-fluid.dtsi
index 42d2b12..a6086f0 100644
--- a/arch/arm/boot/dts/msm8974-fluid.dtsi
+++ b/arch/arm/boot/dts/msm8974-fluid.dtsi
@@ -118,6 +118,7 @@
 			avcc_12-supply = <&pm8941_l2>;
 			smps3a-supply = <&pm8941_s3>;
 			vdda-supply = <&pm8941_l12>;
+			qcom,hdmi-tx-map = <&mdss_hdmi_tx>;
 		};
 
 		isa1200@48 {
diff --git a/arch/arm/boot/dts/msm8974-mdss.dtsi b/arch/arm/boot/dts/msm8974-mdss.dtsi
index b249883..0b95419 100644
--- a/arch/arm/boot/dts/msm8974-mdss.dtsi
+++ b/arch/arm/boot/dts/msm8974-mdss.dtsi
@@ -90,7 +90,7 @@
 		qcom,mdss-fb-map = <&mdss_fb0>;
 	};
 
-	qcom,hdmi_tx@fd922100 {
+	mdss_hdmi_tx: qcom,hdmi_tx@fd922100 {
 		cell-index = <0>;
 		compatible = "qcom,hdmi-tx";
 		reg =	<0xfd922100 0x35C>,