arm/dt: 8974v1: add write-64bit property to stm node

Add write-64bit property to stm node so that the driver can
distinguish between STM supporting just 64bit writes vs one that
supports 8, 16 and 32 bit writes.

Change-Id: Ic16f477d1d58aa26b6ca85ca2f9f413bf071144f
Signed-off-by: Pratik Patel <pratikp@codeaurora.org>
diff --git a/arch/arm/boot/dts/msm8974-v1.dtsi b/arch/arm/boot/dts/msm8974-v1.dtsi
index 37b2c45..c9a5d5b 100644
--- a/arch/arm/boot/dts/msm8974-v1.dtsi
+++ b/arch/arm/boot/dts/msm8974-v1.dtsi
@@ -50,6 +50,10 @@
 	qcom,reset-flush-race;
 };
 
+&stm {
+	qcom,write-64bit;
+};
+
 &msm_vidc {
 	qcom,vidc-cp-map = <0x1000000 0x3f000000>;
 	qcom,vidc-ns-map = <0x40000000 0x40000000>;