[XS] Change in coreboot[main]: mb/google/rauru: Determine PCIe init by storage_id

[Yu-Ping Wu (Code Review)]

Attention is currently required from: Hung-Te Lin, Yidi Lin.

Yu-Ping Wu has posted comments on this change by Yidi Lin. ( https://review.coreboot.org/c/coreboot/+/85828?usp=email )

Change subject: mb/google/rauru: Determine PCIe init by storage_id
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Patch Set 2:

(1 comment)

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

https://review.coreboot.org/c/coreboot/+/85828/comment/26f9fa30_6213928f?usp... :
PS2, Line 52: 	return storage_id() == 3;
> I am thinking if we could follow pcie/regulator that has a `soc/storage. […]

That's even better. I assume you meant

```
// soc/storage.h (shared for all SoCs)
#define ...
enum mtk_storage_type {
};

// mb/google/BOARD/boardid.c
enum mtk_storage_type mainboard_get_storage_type(void)
{
}
```

Then, `soc_init` will call `mainboard_get_storage_type()` and pass it to mtk-fsp. Is my understanding correct?