ApfFilter: APFv6+ - use more optimal And(0xF0) encoding

saves 1 byte of bytecode, since it codes as
  AND (immlen=1, R=0) u8[0xF0] -- meaning 'and r0, 0xFFFFFFF0'
instead of:
  AND (inmlen=2, R=0) u16[0x00F0] -- meaning 'and r0, 0x00F0'

on APFv2/v4 it uses:
  AND (immlen=1, R=0) u8[0xF0] -- meaning 'and r0, 0xF0'

Test: TreeHugger
Signed-off-by: Maciej Żenczykowski <maze@google.com>
Change-Id: I4343f92e81459aac1402522b0805b1b4c96250cd
1 file changed