arm64: apple: t8103-pmgr: SIO: Add audio, spi and uart power-domains

The power-domains AUDIO_P, SPI_P and UART_P are necessary for SIO's ASC
firmware to run. This is not explicitly expressed in the ADT (probably
since the power-domains are implicitly turned on when macOS uses SIO).
Since we plan to use SIO only for DP/HDMI audio add the power-domains
explicitly as dependency of ps_sio_cpu.
They might be better placed directly into the SIO node but the SIO
driver doesn't support multiple power-domains.

Signed-off-by: Janne Grunau <j@jannau.net>
Signed-off-by: Martin Povišer <povik+lin@cutebit.org>

Author: povik

arch/arm64/boot/dts/apple/t8103-pmgr.dtsi

@@ -234,7 +234,7 @@
 		#power-domain-cells = <0>;
 		#reset-cells = <0>;
 		label = "sio_cpu";
-		power-domains = <&ps_sio>;
+		power-domains = <&ps_sio &ps_uart_p &ps_spi_p &ps_dpa0>;
 	};
 
 	ps_fpwm0: power-controller@1d8 {