mb/asrock/h110m: disable CLKREQ to use onboard LAN

The PCH uses the SRCCLKREQ# pin to detect PCIe device in the slot in
order to send clock signal to it. However, this logic is not required
for the Realtek LAN device, since this chip is soldered to the board
and always uses clocking. The chipset can't receive the clock request
signal (most likely this pin isn't connected) and doesn't enable the CLK.
Patch disables clock request logic for the PCIe root port 6 (x1) that is
connected to the onboard Realtek LAN chip.

Change-Id: I5cbce6177c89052eb50959f43903b6f8a607e77f
Signed-off-by: Maxim Polyakov <max.senia.poliak@gmail.com>
---
M src/mainboard/asrock/h110m/devicetree.cb
1 file changed, 0 insertions(+), 4 deletions(-)