m7-common: Add hacked camera libs

* This is a re-apply of commit 47b10b781b0cf2649db11185f94338724d3fa626
  after blobs were updated

* Hacked camera libs use new property "ro.cam.hw.version" to identify
  the hardware the camera is running on.

* For future reference:
for i in $(find . -type f | xargs grep --byte-offset --only-matching --text "ro\.product\.device"); do
    HEXFILE=$(echo $i | gawk 'match($0,/(.+):([0-9+]+):/, a) { print a[1] }')
    HEXOFFSET=$(echo $i | gawk 'match($0,/(.+):([0-9+]+):/, a) { print a[2] }')
    echo "Modifying file: $HEXFILE at offset: $HEXOFFSET"
    printf '\x72\x6f\x2e\x63\x61\x6d\x2e\x68\x77\x2e\x76\x65\x72\x73\x69\x6f\x6e' \
        | dd of=$HEXFILE bs=1 seek=$HEXOFFSET conv=notrunc 2> /dev/null
done

Change-Id: I19a0a774a2ec631bd2c5dba1e8cdd94fdc9c9549