Remove compat.diff usage

Remove compat.diff usage

compat.diff is gone, we've moved to using anything
in the compat/diffs/*.patch. This simple piece is
now used to apply changes:

for i in compat/diffs/*.patch; do
        patch -p1 -N -t < $i
        RET=$?
        if [[ $RET -ne 0 ]]; then
                echo "Patching $i failed, update it"
                exit $RET
        fi
done

There are the current patches:

01-netdev.patch
02-ksize.patch
03-rfkill.patch
04-pcmcia.patch
05-netns.patch
06-usb.patch
07-header-changes.patch
08-change-default-rate-alg
09-zd1211rw-led.patch
98-add-compat-wireless.pat
99-change-makefiles.patch

Please keep 98 and 99 there. I'll send zd1211rw
stuff upstream now so that can be removed afterwards.

At all times we should try to minimize these hunks.

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>