arm64: imx8mq: select PM support

The ATF on the i.MX8MQ device disables all non-essential power
domains. For correct on-SoC peripheral operation we need both
the power domain driver and generic domains, so device driver
probe gets ordered behind the power domain controller driver.

Select those options, as those being absent can lead to very
hard to debug failures.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

arch/arm64/Kconfig.platforms

@@ -147,6 +147,9 @@ config ARCH_MXC
 	select ARM64_ERRATUM_843419
 	select ARM64_ERRATUM_845719
 	select IMX_GPCV2
+	select IMX_GPCV2_PM_DOMAINS
+	select PM
+	select PM_GENERIC_DOMAINS
 	help
 	  This enables support for the ARMv8 based SoCs in the
 	  NXP i.MX family.