We always did under EFI but not under BIOS. Now, the BIOS loader
reports the root pointer as well, so we don't need to find it again.
Change-Id: Ie83adb53f098d44f2688a1a327c084f94afa2673
Reviewed-on: https://review.haiku-os.org/c/haiku/+/8941
Reviewed-by: Fredrik Holmqvist <[email protected]>
Tested-by: Commit checker robot <[email protected]>
Reviewed-by: waddlesplash <[email protected]>