arm64: dts: msm8996: fix PSCI entry-latency-us

The current entry-latency-us is too short.
The proper way to convert between the device tree properties
from the vendor tree to the upstream PSCI device tree properties is:

entry-latency-us = qcom,time-overhead - qcom,latency-us

which gives

entry-latency-us = 210 - 80 = 130

Fixes: f6aee7a ("arm64: dts: qcom: msm8996: Add PSCI cpuidle low power states")
Signed-off-by: Niklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

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

@@ -174,7 +174,7 @@
 				compatible = "arm,idle-state";
 				idle-state-name = "standalone-power-collapse";
 				arm,psci-suspend-param = <0x00000004>;
-				entry-latency-us = <40>;
+				entry-latency-us = <130>;
 				exit-latency-us = <80>;
 				min-residency-us = <300>;
 			};