arm64: dts: qcom: sdm660: Make the DTS an overlay on top of 630

There is SO MUCH common code between these two SoCs that it makes
no sense to keep what is essentially a duplicate of 630.dtsi. Instead,
it's better to just change the things that differ.
Signed-off-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Link: https://lore.kernel.org/r/20210728222542.54269-25-konrad.dybcio@somainline.orgSigned-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>

arch/arm64/boot/dts/qcom/sdm660-xiaomi-lavender.dts

@@ -37,8 +37,6 @@ ramoops@a0000000 {
 
 &blsp1_uart2 {
 	status = "okay";
-	pinctrl-names = "default";
-	pinctrl-0 = <&uart_console_active>;
 };
 
 &tlmm {