[nrf noup] dts: nrf54h20: Add zephyr,pm-device-runtime-auto; to uart instances

The uart driver for nRF54h20 doesn't call pm_device_runtime_enable().
During an uart driver init `pm_device_driver_init()` return early,
because the `pm_device_is_powered()` returns `false`. Power domains,
where uarts are instantiated, are disabled: `pm->domain->pm_base->state`
is not equal to `PM_DEVICE_STATE_ACTIVE`.

At the end of the day, an uart instance is left disabled.

This is a workaround to make the uart usable when CONFIG_PM,
CONFIG_PM_DEVICE and CONFIG_PM_DEVICE_RUNTIME are enabled.

Signed-off-by: Piotr Pryga <[email protected]>

Author: ppryga-nordic

dts/vendor/nordic/nrf54h20.dtsi

@@ -749,6 +749,7 @@
 				power-domains = <&gdpwr_fast_active_1>;
 				endtx-stoptx-supported;
 				frame-timeout-supported;
+				zephyr,pm-device-runtime-auto;
 			};
 
 			spi121: spi@8e7000 {
@@ -1157,6 +1158,7 @@
 				nordic,clockpin-enable = <NRF_FUN_UART_TX>;
 				endtx-stoptx-supported;
 				frame-timeout-supported;
+				zephyr,pm-device-runtime-auto;
 			};
 
 			i2c131: i2c@9a6000 {
@@ -1292,6 +1294,7 @@
 				nordic,clockpin-enable = <NRF_FUN_UART_TX>;
 				endtx-stoptx-supported;
 				frame-timeout-supported;
+				zephyr,pm-device-runtime-auto;
 			};
 
 			i2c133: i2c@9b6000 {
@@ -1338,6 +1341,7 @@
 				nordic,clockpin-enable = <NRF_FUN_UART_TX>;
 				endtx-stoptx-supported;
 				frame-timeout-supported;
+				zephyr,pm-device-runtime-auto;
 			};
 
 			dppic135: dppic@9c1000 {
@@ -1426,6 +1430,7 @@
 				nordic,clockpin-enable = <NRF_FUN_UART_TX>;
 				endtx-stoptx-supported;
 				frame-timeout-supported;
+				zephyr,pm-device-runtime-auto;
 			};
 
 			i2c135: i2c@9c6000 {
@@ -1472,6 +1477,7 @@
 				nordic,clockpin-enable = <NRF_FUN_UART_TX>;
 				endtx-stoptx-supported;
 				frame-timeout-supported;
+				zephyr,pm-device-runtime-auto;
 			};
 
 			dppic136: dppic@9d1000 {
@@ -1607,6 +1613,7 @@
 				nordic,clockpin-enable = <NRF_FUN_UART_TX>;
 				endtx-stoptx-supported;
 				frame-timeout-supported;
+				zephyr,pm-device-runtime-auto;
 			};
 
 			tdm130: tdm@992000 {