superio/common: Validate devicetree

As the SSDT generator for LDNs expects a "parent" PNP device
for proper ACPI code generation, validate that it is present.

Make sure the devicetree looks as expected and print a BUG message
if that's not the case.

Tested on HP Z220:
No BUG message was printed.

Change-Id: I6cbcba8ac86a2a837e23055fdd7e529f9b3277a2
Signed-off-by: Patrick Rudolph <patrick.rudolph@9elements.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/38863
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Felix Held <felix-coreboot@felixheld.de>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>

0 files changed, 0 insertions, 0 deletions