[coreboot-gerrit] Change in coreboot[master]: mainboard/google/puff: Enable net driver on pcie ep

[Edward O'Callaghan (Code Review)]

Hello Furquan Shaikh, Patrick Georgi,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/38003

to look at the new patch set (#2).

Change subject: mainboard/google/puff: Enable net driver on pcie ep
......................................................................

mainboard/google/puff: Enable net driver on pcie ep

Let coreboot know there is a NIC device on the end so
that the mac from vpd is set at early boot.

Properly configure the link-leds in devicetree s.t.
valid values are written out to the register at initialization.

Finally let the linker trim unused net driver symbols when
unused in devicetree rather than being overly zealous in the Kconfig.

BUG=b:146592075,146999042,146999043
BRANCH=none
TEST=Boot to kernel.
     Insert mac address into VPD
       vpd -s ethernet_mac=<address>
     reboot the system.
     Ensure we have ip address and corresponding mac
     address with ifconfig.
     Ensure ethernet controller shows up with lspci.

Change-Id: I76ce6d8a5a26842fcb2544ee96567fe0da8603b1
Signed-off-by: Edward O'Callaghan 
---
M src/mainboard/google/hatch/Kconfig
M src/mainboard/google/hatch/variants/puff/overridetree.cb
2 files changed, 8 insertions(+), 3 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/03/38003/2