Add rank_mask based on the rank number and iterate based on that rather
than iterating all values.
Note: LPDDR4 uses a different rank mask.
Ported from u-boot.
Signed-off-by: Moritz Fischer <moritzf@google.com>
Change-Id: I85f449af9f946ad677808800cdbe59e2001202c3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/50887
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: ron minnich <rminnich@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
145ecc6761