ice: allow calling custom send function in fwlog

Fwlog code needs to communicate with FW. In ice it is done through admin
queue command. Allow indirect calling the send function to move the
specific admin queue send function from fwlog core code.

Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Michal Swiatkowski <michal.swiatkowski@linux.intel.com>
Tested-by: Rinitha S <sx.rinitha@intel.com> (A Contingent worker at Intel)
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>