i.MX SoC update for 4.20:
- Add ipg clock support in MMDC driver for registers access, so that
we will be safe even if the clock is not turned on by firmware.
- Register pm_power_off handler to provide power off support for iMX6
based boards with external PMIC.
- Add platform code support for i.MX 6ULZ SoC which is a derivative of
i.MX6ULL with some modules removed.
* tag 'imx-soc-4.20' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
ARM: imx: add i.mx6ulz msl support
ARM: imx6: register pm_power_off handler if "fsl,pmic-stby-poweroff" is set
ARM: imx: add mmdc ipg clock operation for mmdc
Signed-off-by: Arnd Bergmann <arnd@arndb.de>