feat(zynqmp): remove pm_ioctl_set_sgmii_mode api

There are no existing users of pm_ioctl_set_sgmii_mode() API so
cleanup the dead code.

Change-Id: I1088d2f5c944bf54fc5fdd554360bdd321ad798a
Signed-off-by: Ronak Jain <ronak.jain@amd.com>
5 files changed