net/ice/base: disable profile merge for flow director

net/ice/base: disable profile merge for flow director

For Flow Director, we don't want to re-use an existed profile with the
same field vector and mask. Merging two different flow_type’s field
vector will also make them sharing trained rule and cause rule
interference.

For example:
issue rule A: IPV4_TCP matching tcp src&dst port 80  to queue 8
issue rule B: IPV6_TCP matching tcp src&dst port 200 to queue 20
Below behavior is found but not expected:
IPV4_TCP pkt with src&dst port 200 hits rule B and goes to queue 20
IPV6_TCP pkt with src&dst port 80  hits rule A and goes to queue 8

Signed-off-by: Yahui Cao <yahui.cao@intel.com>
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>