6926 Move ixgbe Intel common code into its own directory Reviewed by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net> Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com> Reviewed by: Igor Kozhukhov <ikozhukhov@gmail.com> Approved by: Richard Lowe <richlowe@richlowe.net>