This will fix everything that uses a timer (or sleep).
Without this any function like eMMC/SD read/write/verify, TSEC/SE, etc can break when the time reaches the max value of the u32 microsecond timer (71minutes).
This fixes every possible breakage, including backup and restore (read/write/verify errors) that takes a lot of time.
The new max before a timer reset is now 48 days (the old one was 71 minutes)
* MMC/SD: Change many hardcoded values to named ones
* MMC/SD: Fix scr and csd byte/bitfield ordering
* MMC: Add ext csd parsing and using these variables isntead of arrays
* MMC: Fix BKOPS support but disabled
* SD: Add partial sd v1 support
* SD: Fix we support low voltage OCR bit
* SD: Add scr parsing and using these variables instead of hardcoded ones