[XS] Change in coreboot[main]: mb/asus/p8x7x-series: Hide nonexistent IVB devices

[Matt DeVillier (Code Review)]

Matt DeVillier has submitted this change. ( https://review.coreboot.org/c/coreboot/+/86185?usp=email )

Change subject: mb/asus/p8x7x-series: Hide nonexistent IVB devices
......................................................................

mb/asus/p8x7x-series: Hide nonexistent IVB devices

Hide peg12, dev4, and peg60 devices to squelch leftover devices
warning seen with p8z77-m, p8z77-v and p8z77-v_le_plus:

[WARN ]  PCI: Leftover static devices:
[WARN ]  PCI: 00:00:01.1
[WARN ]  PCI: 00:00:01.2
[WARN ]  PCI: 00:00:04.0
[WARN ]  PCI: 00:00:06.0
[WARN ]  PCI: Check your devicetree.cb.

No board in this family can do the 8/4/4 PCIe lane split to
require the peg12 bridge, or implemented dev4 at all.

Only p8c_ws wired up the 4 extra Xeon PCIe lanes peg60 is supposed
to cover, and its overridetree already enables it.

Therefore, be proactive and hide these from the rest of the family.

Change-Id: I24234e6b77a9effc577c8e22c77bb9896b983b7f
Signed-off-by: Keith Hui 
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86185
Tested-by: build bot (Jenkins) 
Reviewed-by: Elyes Haouas 
---
M src/mainboard/asus/p8x7x-series/devicetree.cb
1 file changed, 3 insertions(+), 0 deletions(-)

Approvals:
  Elyes Haouas: Looks good to me, approved
  build bot (Jenkins): Verified

diff --git a/src/mainboard/asus/p8x7x-series/devicetree.cb b/src/mainboard/asus/p8x7x-series/devicetree.cb
index fbff870..eb7a243 100644
--- a/src/mainboard/asus/p8x7x-series/devicetree.cb
+++ b/src/mainboard/asus/p8x7x-series/devicetree.cb
@@ -9,7 +9,10 @@

device domain 0 on
    	device ref peg10 on  end # PCIEX16_1
+		device ref peg12 hidden end
    	device ref igd on  end
+		device ref dev4 hidden end
+		device ref peg60 hidden end

chip southbridge/intel/bd82x6x
    		register "sata_interface_speed_support" = "0x3"