ARM: dts: msm: increase ion heap size for SDM670/710

Increase ion heap size from 4MB to 8MB to meet CTS DRM cases
requirement.

Change-Id: I223994c5c8bcd6c150cfd6e35fcaaf8ee3c62c5f
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>
diff --git a/arch/arm64/boot/dts/qcom/sdm670.dtsi b/arch/arm64/boot/dts/qcom/sdm670.dtsi
index da62c46..2d4e060 100644
--- a/arch/arm64/boot/dts/qcom/sdm670.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm670.dtsi
@@ -571,7 +571,7 @@
 			alloc-ranges = <0 0x00000000 0 0xffffffff>;
 			reusable;
 			alignment = <0 0x400000>;
-			size = <0 0x400000>;
+			size = <0 0x800000>;
 		};
 
 		qseecom_ta_mem: qseecom_ta_region {