net/ice/base: fix inner TCP and UDP support for GRE

net/ice/base: fix inner TCP and UDP support for GRE

The dummy packets for GRE were set up for IP, but not inner
TCP or UDP. There are some applications that want to be
able to parse on those inner L4 headers so add them to
the dummy packets.

Also, the GRE dummy packet was formatted differently from
the other dummy packets so change the formatting to match
all the other dummy packets.

Fixes: 839c0a4b77e6 ("net/ice/base: enable additional switch rules")

Signed-off-by: Paul M Stillwell Jr <paul.m.stillwell.jr@intel.com>
Signed-off-by: Qi Zhang <qi.z.zhang@intel.com>
Acked-by: Qiming Yang <qiming.yang@intel.com>