Aligned the package layout with the concurrent Debian packaging
conventions. Relocated package files under 'debian/bullseye/' and removed legacy paths under 'debian/'.
Updated related build references to ensure compatibility with Bullseye.
grub-efi
grub2
grubby
Change-Id: I708db8e2d68546e6bbc5fb97851139b032c27140
Signed-off-by: pmp1 <preetham.mp@windriver.com>
38035a9354