Change in coreboot[master]: wifi: Add support for new revisions of SAR table entries

[Sugnan Prabhu S (Code Review)]

Attention is currently required from: Furquan Shaikh, Sugnan Prabhu S, Paul Menzel.
Hello build bot (Jenkins), Furquan Shaikh, Tim Wawrzynczak,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/56750

to look at the new patch set (#26).

Change subject: wifi: Add support for new revisions of SAR table entries
......................................................................

wifi: Add support for new revisions of SAR table entries

Existing SAR infrastructure supports only revision 0 of the SAR tables.
This patch modifies it to extend support for intel wifi 6 and wifi 6e
configurations as per the connectivity document:
559910_Intel_Connectivity_Platforms_BIOS_Guidelines_Rev6_4.pdf

The SAR table and WGDS configuration block sizes were static in the
legacy SAR file format. Following is the format of the new binary file.

+------------------------------------------------------------+
| Field     | Size     | Description                         |
+------------------------------------------------------------+
| Marker    | 4 bytes  | "$SAR"                              |
+------------------------------------------------------------+
| Version   | 1 byte   | Current version = 1                 |
+------------------------------------------------------------+
| SAR table | 2 bytes  | Offset of SAR table from start of   |
| offset    |          | the header                          |
+------------------------------------------------------------+
| WGDS      | 2 bytes  | Offset of WGDS table from start of  |
| offset    |          | the header                          |
+------------------------------------------------------------+
| Data      | n bytes  | Data for the different tables       |
+------------------------------------------------------------+

This change supports both the legacy and the new format of SAR file

BUG=b:193665559
TEST=Checked the SSDT entries for WRDS, EWRD and WGDS with different
binaries generated by setting different versions in the config.star

Change-Id: I08c3f321938eba04e8bcff4d87cb215422715bb2
Signed-off-by: Sugnan Prabhu S 
---
M src/drivers/wifi/generic/acpi.c
M src/include/sar.h
M src/vendorcode/google/chromeos/sar.c
3 files changed, 385 insertions(+), 136 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/50/56750/26