arm64: dts: qcom: msm8996: use standartized naming for spmi node

Following naming convention, rename qcom,spmi@ node to spmi@
Signed-off-by: David Heidelberg <david@ixit.cz>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20211224163107.53708-1-david@ixit.cz

arch/arm64/boot/dts/qcom/msm8996.dtsi

@@ -1546,7 +1546,7 @@ sram@290000 {
 			reg = <0x00290000 0x10000>;
 		};
 
-		spmi_bus: qcom,spmi@400f000 {
+		spmi_bus: spmi@400f000 {
 			compatible = "qcom,spmi-pmic-arb";
 			reg = <0x0400f000 0x1000>,
 			      <0x04400000 0x800000>,