uboot-phytec

ARM: imx: vining2000: Clean up uSDHC4 setup

Simplify the uSDHC4 eMMC controller setup. This is the only eMMC
present on the system and only controller that is used, so drop
the extra logic.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Silvio Fricke <silvio.fricke@softing.com>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Stefano Babic <sbabic@denx.de>