arm64: dts: qcom: msm8992-libra: Temporarily restrict CPU count to 1

The phone seems to randomly crash when more than 1 CPU is enabled, which
is probably related to lack of some driver.

Restrict the device to only use a single core until this is solved.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lore.kernel.org/r/20220319174645.340379-4-konrad.dybcio@somainline.org

arch/arm64/boot/dts/qcom/msm8992-xiaomi-libra.dts

@@ -23,7 +23,7 @@ / {
 
 	/* This enables graphical output via bootloader-enabled display */
 	chosen {
-		bootargs = "earlycon=tty0 console=tty0";
+		bootargs = "earlycon=tty0 console=tty0 maxcpus=1";
 
 		#address-cells = <2>;
 		#size-cells = <2>;