arm64: dts: qcom: sm8250: rename spmi node to spmi_bus

The pm8150 dtsi files refer to it as spmi_bus, so change it.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Link: https://lore.kernel.org/r/20200523132104.31046-1-jonathan@marek.ca
[bjorn: Dropped qcom, from node name while we're poking at it]
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/sm8250.dtsi

@@ -396,7 +396,7 @@ pdc: interrupt-controller@b220000 {
 			interrupt-controller;
 		};
 
-		spmi: qcom,spmi@c440000 {
+		spmi_bus: spmi@c440000 {
 			compatible = "qcom,spmi-pmic-arb";
 			reg = <0x0 0x0c440000 0x0 0x0001100>,
 			      <0x0 0x0c600000 0x0 0x2000000>,