ice: Add ice_get_ctrl_ptp() wrapper to simplify the code

Add ice_get_ctrl_ptp() wrapper to simplify the PTP support code
in the functions that do not use ctrl_pf directly.
Add the control PF pointer to struct ice_adapter
Rearrange fields in struct ice_adapter

Signed-off-by: Sergey Temerkhanov <sergey.temerkhanov@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>