arm64: dts: qcom: sdm630: add UART pin functions

Configure UART1 and UART2 pins to respective functions in default state,
otherwise the pins might stay as GPIOs.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20221011190231.76784-1-krzysztof.kozlowski@linaro.org

arch/arm64/boot/dts/qcom/sdm630.dtsi

@@ -723,6 +723,7 @@ tlmm: pinctrl@3100000 {
 
 			blsp1_uart1_default: blsp1-uart1-default {
 				pins = "gpio0", "gpio1", "gpio2", "gpio3";
+				function = "blsp_uart1";
 				drive-strength = <2>;
 				bias-disable;
 			};
@@ -735,6 +736,7 @@ blsp1_uart1_sleep: blsp1-uart1-sleep {
 
 			blsp1_uart2_default: blsp1-uart2-default {
 				pins = "gpio4", "gpio5";
+				function = "blsp_uart2";
 				drive-strength = <2>;
 				bias-disable;
 			};