Revamp microcode firmware flag and installboot usage
- Replace undocumented
-i
flag (for Intel) with-u
(for ucode/microcode). Users of the default, all-firmware approach are unaffected. - Move updating of
biosboot(8)
andboot(8)
out ofupgrade.sh
and intorc.resflash
. A mere two reboots will now be required to update all bootloaders, rather than two upgrades. - Update
README.md
. - Version bump.