Change in coreboot[master]: util/sconfig: Re-factor sconfig to not assume chip as device

[Furquan Shaikh (Code Review)]

Furquan Shaikh has uploaded a new patch set (#2). ( https://review.coreboot.org/26720 )

Change subject: util/sconfig: Re-factor sconfig to not assume chip as device
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util/sconfig: Re-factor sconfig to not assume chip as device

This change adds a new structure "struct chip" to identify elements of
type chip rather than re-using the structure for device. It helps
clean up the devicetree by avoiding unnecessary pointers to chip
structure as children or next_sibling and then skipping those elements
in post processing.

With this change, the devicetree will only contain struct device in
the tree. Every device can then hold a pointer to its chip. When
generating static.c, chip structure is emitted before device structure
to ensure that the device structure has chip within its scope.

Externally, the only visible change in static.c should be the order in
which chip elements are emitted i.e. previously all chips under a
particular device were emitted to static.c and then the devices using
those chips. Now, a chip is emitted just before device that is using
it.

This clean up is part of a bigger change required to support overriding
of devicetree by variants.

BUG=b:80081934
TEST=Verified that abuild is successful for all boards. Also, verified
that static.c generated for eve, kahlee, scarlet is unchanged from before.

Change-Id: I255092f527c8eecb144385eb681df20e54caf8f5
Signed-off-by: Furquan Shaikh 
---
M util/sconfig/main.c
M util/sconfig/sconfig.h
M util/sconfig/sconfig.tab.c_shipped
M util/sconfig/sconfig.tab.h_shipped
M util/sconfig/sconfig.y
5 files changed, 189 insertions(+), 117 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/20/26720/2