enic: enic rq extended cq defines

Adds the defines for 32 and 64 byte receive queue completion queue
descriptors.
Adds devcmd define to get rq cq descriptor size/s supported by hw.

Co-developed-by: Nelson Escobar <neescoba@cisco.com>
Signed-off-by: Nelson Escobar <neescoba@cisco.com>
Co-developed-by: John Daley <johndale@cisco.com>
Signed-off-by: John Daley <johndale@cisco.com>
Signed-off-by: Satish Kharat <satishkh@cisco.com>
Link: https://patch.msgid.link/20250304-enic_cleanup_and_ext_cq-v2-3-85804263dad8@cisco.com


Signed-off-by: Paolo Abeni <pabeni@redhat.com>