arm64: dts: qcom: sc7280: correct CPU BWMON unit address

Correct CPU BWMON unit address to match the "reg" property.
Reported-by: Stephen Boyd <swboyd@chromium.org>
Fixes: b2f3eac1 ("arm64: dts: qcom: sc7280: Add cpu and llcc BWMON")
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20220908085830.39141-1-krzysztof.kozlowski@linaro.org

arch/arm64/boot/dts/qcom/sc7280.dtsi

@@ -3328,7 +3328,7 @@ opp-7 {
 			};
 		};
 
-		pmu@90b6000 {
+		pmu@90b6400 {
 			compatible = "qcom,sc7280-cpu-bwmon", "qcom,msm8998-bwmon";
 			reg = <0 0x090b6400 0 0x600>;