Currently, the raw item is always preceded by a UDP header, and both
land in the L4 pattern buffer. So consider the UDP header size when
checking if the raw spec fits in the L4 buffer.
Coverity issue: 336796, 336850
Fixes: 477959e6ee ("net/enic: enable limited support for raw flow item")
Signed-off-by: Hyong Youb Kim <hyonkim@cisco.com>
Reviewed-by: John Daley <johndale@cisco.com>