cfg80211: ship debian certificates as hex files

Loading the regulatory database from the debian files fails with

"loaded regulatory.db is malformed or signature is missing/invalid"

due to missing certificates.  Add these debian-specific certificates
from upstream to fix this error. See #5536 for details.

The certificates have been imported as following:

patch -p1 <<<$(
curl https://salsa.debian.org/kernel-team/linux/-/raw/\
master/debian/patches/debian/\
wireless-add-debian-wireless-regdb-certificates.patch
)

Signed-off-by: Nicolai Buchwitz <[email protected]>