arm64: dts: imx8mm-kontron: Add support for ultra high speed modes on SD card

[ Upstream commit ec1e91d4 ]

In order to use ultra high speed modes (UHS) on the SD card slot, we
add matching pinctrls and fix the voltage switching for LDO5 of the
PMIC, by providing the SD_VSEL pin as GPIO to the PMIC driver.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Stable-dep-of: 00882052 ("arm64: dts: imx8mm-kontron: Disable pull resistors for SD card signals on BL board")
Signed-off-by: Sasha Levin <sashal@kernel.org>