Hammerhead: Update build fingerprint and description to KTU84M

OriginalChange-Id: Ib7779d9d0f7ba9ba91f4560e1d3c3b673b543fb0

Change-Id: Ied21ee101e51587e52c17c73c815173a2b9ceff7
Signed-off-by: STELIX <ssspinni@gmail.com>