Change in coreboot[master]: mb/getac/p470: Replace OSYS conditions

[Nico Huber (Code Review)]

Attention is currently required from: Kyösti Mälkki.
Nico Huber has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/49481 )

Change subject: mb/getac/p470: Replace OSYS conditions
......................................................................

Patch Set 2:

(2 comments)

Patchset:

PS2: 
It's probably what was meant by the original author... but the
code seems broken on all ends and I don't see the incentive to
change it?

TRAP(0x3d) doesn't seem implemented, _PPC seems to be a method.

File src/mainboard/getac/p470/acpi/platform.asl:

https://review.coreboot.org/c/coreboot/+/49481/comment/e47febe8_1440b0f5 
PS2, Line 76: 	If (OSYS < 2003) {
Hard to tell if this is specific to 2002, but given the other comments
I would say the distinction was 2002 and _not_ before.

Tried to figure what the code does, I guess raising exceptions because
_PPC is a method?