enic: Create enic_wq/rq structures to bundle per wq/rq data

Bundling the wq/rq specific data into dedicated enic_wq/rq structures
cleans up the enic structure and simplifies future changes related to
wq/rq.

Co-developed-by: John Daley <johndale@cisco.com>
Signed-off-by: John Daley <johndale@cisco.com>
Co-developed-by: Satish Kharat <satishkh@cisco.com>
Signed-off-by: Satish Kharat <satishkh@cisco.com>
Signed-off-by: Nelson Escobar <neescoba@cisco.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Vadim Fedorenko <vadim.fedorenko@linux.dev>
Link: https://patch.msgid.link/20241113-remove_vic_resource_limits-v4-1-a34cf8570c67@cisco.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>