ice: log an error message when eswitch fails to configure

When ice_eswitch_configure fails, print an error message to make it more
obvious why VF initialization did not succeed.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>