Fixing tCCD_L readout on some MSI motherboards / AGESA versions.
This should either fix the tCCD_L read issue or completely break it. Every
register/APOB offset differs from board to board and from AGESA to AGESA (Zen4
vs Zen5 as well), so pinpointing the exact location is really hard.
If it reads wrong on your system, two debug reports - one before and one after
changing tCCD_L in BIOS - are the fastest way for me to fix it.