GitLab

Improve "extcsd read" output of the registers.
Right-shift by 3 of EXT_CSD_BOOT_CFG_EN bits.
Expand the EXT_CSD_BOOT_CFG_ACC bit mask to 0x7.
Add case 3 RPMB partition.
Signed-off-by: Mario Schuknecht <mario.schuknecht@dresearch-fe.de>
Signed-off-by: Chris Ball <cjb@laptop.org>