Add PCI shutdown handler support for supporting wake-on-lan feature.

Link: https://lore.kernel.org/r/20200319083811.19499-3-mrangankar@marvell.comSigned-off-by: NManish Rangankar <mrangankar@marvell.com>
Signed-off-by: NNilesh Javali <njavali@marvell.com>
Signed-off-by: NMartin K. Petersen <martin.petersen@oracle.com>