[coreboot-gerrit] [M] Change in coreboot[main]: mb/google/rauru: Implement SKU ID

[Yidi Lin (Code Review)]

Attention is currently required from: Jarried Lin.

Yidi Lin has posted comments on this change by Jarried Lin. ( https://review.coreboot.org/c/coreboot/+/85666?usp=email )

Change subject: mb/google/rauru: Implement SKU ID
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Patch Set 8:

(2 comments)

File src/mainboard/google/rauru/boardid.c:

https://review.coreboot.org/c/coreboot/+/85666/comment/d9ffef33_09764510?usp... :
PS7, Line 66:  get_adc_index(SKU_ID_LOW_CHANNEL))
> I'd like to suggest the 0x7FFFXFFF and take "X" as storage type usage, […]

Synced with @[e-mail],
```
bit[7:0] reserved for panel type,
bit[8] reserved for CPU type,
bit[11:9] reserved for storage type.
```

@[e-mail]
Please add a `storage_id` function similar to `panel_id` in corsola/geralt and declare storage_id in `storage.h`.

Combine storage_id with unprovisioned value.
```

cached_sku_code = CROS_SKU_UNPROVISIONED;
cached_sku_code &= ~(7 << 8);
cached_sku_code |= (storage_id() << 8);
```

File src/mainboard/google/rauru/boardid.c:

https://review.coreboot.org/c/coreboot/+/85666/comment/d04a616d_67b66644?usp... :
PS8, Line 60: cached_sku_code == CROS_SKU_UNKNOWN)
`|| cached_sku_code == CROS_SKU_UNPROVISIONED`