arm64: dts: qcom: x1e80100-*: Allocate some CMA buffers

In a fashion identical to commit 5f84c7c3 ("arm64: dts: qcom:
sc8280xp: Define CMA region for CRD and X13s"), there exists a need for
more than the default 32 MiB of CMA, namely for the ath12k_pci device.

Reserve a 128MiB chunk to make boot-time failures like:
 cma: cma_alloc: reserved: alloc failed, req-size: 128 pages, ret: -12
go away.

Fixes: af16b005 ("arm64: dts: qcom: Add base X1E80100 dtsi and the QCP dts")
Fixes: bd50b1f5 ("arm64: dts: qcom: x1e80100: Add Compute Reference Device")
Signed-off-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Link: https://lore.kernel.org/r/20240522-topic-x1e_cma-v1-1-b69e3b467452@linaro.orgSigned-off-by: Bjorn Andersson <andersson@kernel.org>

arch/arm64/boot/dts/qcom/x1e80100-crd.dts

@@ -49,6 +49,15 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 
+	reserved-memory {
+		linux,cma {
+			compatible = "shared-dma-pool";
+			size = <0x0 0x8000000>;
+			reusable;
+			linux,cma-default;
+		};
+	};
+
 	sound {
 		compatible = "qcom,x1e80100-sndcard";
 		model = "X1E80100-CRD";

arch/arm64/boot/dts/qcom/x1e80100-qcp.dts

@@ -23,6 +23,15 @@ chosen {
 		stdout-path = "serial0:115200n8";
 	};
 
+	reserved-memory {
+		linux,cma {
+			compatible = "shared-dma-pool";
+			size = <0x0 0x8000000>;
+			reusable;
+			linux,cma-default;
+		};
+	};
+
 	vph_pwr: vph-pwr-regulator {
 		compatible = "regulator-fixed";