ARM: dts: msm: add CMA pool for QCA6390 on sdxprairie

QCA6390 device needs more than 10MB contiguous memory. Thus add
CMA pool for QCA6390 device.

Change-Id: I72725a3f31ccc036c6bf5be3dae5b3af0a118fa0
Signed-off-by: Jia Ding <jiad@codeaurora.org>

arch/arm64/boot/dts/qcom/sdxprairie.dtsi

@@ -106,7 +106,13 @@
 			compatible = "shared-dma-pool";
 			reusable;
 			size = <0x400000>;
-		 };
+		};
+
+		cnss_wlan_mem: cnss_wlan_region@0 {
+			compatible = "shared-dma-pool";
+			reusable;
+			size = <0x1400000>;
+		};
 	};
 
 	cpus {
@@ -1145,3 +1151,11 @@
 		};
 	};
 };
+
+&pcie0_rp {
+	cnss: qcom,qca6390@0 {
+		reg = <0 0 0 0 0>;
+
+		memory-region = <&cnss_wlan_mem>;
+	};
+};