When booting via PXE one can set the ksdevice=bootif and add
'IPAPPEND 2' to the PXE boot config, this will set the MAC
address in the BOOTIF kernel cmdline which can then be used to
determine the NIC name to be used for the installation.
Tested with both valid and invalid input to BOOTIF=
Story: 2007486
Task: 39205
Change-Id: Iec1e8215571a6bb8fb79a461ce9210dddf2c764f
Signed-off-by: Saul Wold <sgw@linux.intel.com>
8d1695fa6a