[S] Change in coreboot[master]: soc/intel/cmn: Implement an API to get ISHC version

[Subrata Banik (Code Review)]

Attention is currently required from: Dinesh Gehlot.

Subrata Banik has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/74209 )

Change subject: soc/intel/cmn: Implement an API to get ISHC version
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Patch Set 2:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/74209/comment/55a3e186_cd89f354 
PS2, Line 7: soc/intel/cmn
soc/intel/cmd/block/cse

https://review.coreboot.org/c/coreboot/+/74209/comment/b09a0aed_42072ddd 
PS2, Line 13: ISHC version is verified on the Nissa board using a debug patch
Able to build and boot google/nivviks.

here is the ISH version output with this patch

```
Add the ISH version info,
```