SBK-19: MMC card detect types from upstream FSL
SBK-19: Changes to various fields for polling card detect
SBK-19: Fixes broken multiblock read.
SBK-19: Fixes for MMC detect
Fixes broken config file
SBK-19: Make sure mmc1 is flagged as nonremovable
SBK-24: Ensure card detect flows through custom driver code
SBK-24: Hack for reducing mmc0 interrupts when not inserted
SBK-24: Increased polling when card not inserted
Fixups for mmc1, minor refactor
SBK-24: Add polling delay to reduce CPU overhead

This reverts commit ff9410041f99a1f11bbb1bbaf4dcb8b117b65137.
Reduced custom CD control flow
Fiddling with SDHCI reset
Small fixups