ARM: dts: msm: optimize CMA regions for qcs605

Reduced mem_dump_region size to 8MB from 36MB for QCS605.

Change-Id: Ic8c5bf8553da49a61ce774d49023a1d6a5055014
Signed-off-by: Vishwanath Raju K <vishk@codeaurora.org>
diff --git a/arch/arm64/boot/dts/qcom/sdm670.dtsi b/arch/arm64/boot/dts/qcom/sdm670.dtsi
index 3ca33b2..7302296 100644
--- a/arch/arm64/boot/dts/qcom/sdm670.dtsi
+++ b/arch/arm64/boot/dts/qcom/sdm670.dtsi
@@ -1389,7 +1389,7 @@
 		};
 	};
 
-	mem_dump {
+	mem_dump: mem_dump {
 		compatible = "qcom,mem-dump";
 		memory-region = <&dump_mem>;