debian/rules: do not use package notes
dh_package_notes creates a .note.package section in the OpenSBI firmware which not only ends up in ELF files but also in the *.bin files. This renders them unusable.
Disable package notes in the OpenSBI package.
(LP: #2080244) (Closes: #1081291)
Signed-off-by: Heinrich Schuchardt heinrich.schuchardt@canonical.com