ixgbevf: Update descriptor macros to accept pointers and drop _ADV suffix

This change updates the descriptor macros to accept pointers, updates the
name to drop the _ADV suffix, and include the IXGBEVF name in the macro.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Greg Rose <gregory.v.rose@intel.com>
Tested-by: Sibai Li <sibai.li@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>