[nrf fromlist] dts: vendor: nordic: nrf54h: move adc and comp to gdpwr_slow_main

The ADC and COMP on the nrf54h20 both have all of their analog
inputs routed to pads in different power domains than themselves,
this means the device drivers for both of them need to request the
pads to be resumed when active to allow any reading of the pads.

To keep the drivers simple, we can rely on HW to keep the power
domain the COMP and ADC are in powered, which happens automatically
when the ADC or COMP is ENABLED. We can then place them on the
power domain of their pads in the devicetree. This ensures the pads
are powered and not retained while the devices are RESUMED.

Upstream PR #: 96711

Signed-off-by: Bjarki Arge Andreasen <[email protected]>

Author: bjarki-andreasen

dts/vendor/nordic/nrf54h20.dtsi

@@ -991,7 +991,13 @@
 				interrupts = <386 NRF_DEFAULT_IRQ_PRIORITY>;
 				status = "disabled";
 				#io-channel-cells = <1>;
-				power-domains = <&gdpwr_slow_active>;
+				/*
+				 * This device is actually in the gdpwr_slow_active domain, but
+				 * all of its analog inputs are routed to pads in the
+				 * gdpwr_slow_main. Request gdpwr_slow_main and rely on the
+				 * device HW to force its own power domain on while ENABLED.
+				 */
+				power-domains = <&gdpwr_slow_main>;
 				zephyr,pm-device-runtime-auto;
 			};
 
@@ -1004,7 +1010,13 @@
 				reg = <0x983000 0x1000>;
 				status = "disabled";
 				interrupts = <387 NRF_DEFAULT_IRQ_PRIORITY>;
-				power-domains = <&gdpwr_slow_active>;
+				/*
+				 * This device is actually in the gdpwr_slow_active domain, but
+				 * all of its analog inputs are routed to pads in the
+				 * gdpwr_slow_main. Request gdpwr_slow_main and rely on the
+				 * device HW to force its own power domain on while ENABLED.
+				 */
+				power-domains = <&gdpwr_slow_main>;
 			};
 
 			temp: temperature-sensor@984000 {