[XS] Change in coreboot[master]: drivers/intel/fsp2_0: Correct FSP performance timestamp unit

[Ronak Kanabar (Code Review)]

Attention is currently required from: Andrey Petrov, Himanshu Sahdev, Pratikkumar V Prajapati, Subrata Banik, Wonkyu Kim.

Ronak Kanabar has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/75816?usp=email )

Change subject: drivers/intel/fsp2_0: Correct FSP performance timestamp unit
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Patch Set 2:

(1 comment)

File src/drivers/intel/fsp2_0/fsp_timestamp.c:

https://review.coreboot.org/c/coreboot/+/75816/comment/93e693ae_38b46bc9 :
PS2, Line 56: TIMESTAMP_MS
> isn't it getting converted here and L:47 to MS before printing?

https://review.coreboot.org/c/coreboot/+/62942

Check test prints in original patch it is in microseconds. I have observed same output. We are dividing by 1000 but data is still in microseconds. I confirmed with FSP team data is in nano second, so we need to divide by 10^6 to make it in ms. I thought better to change unit to us. I will change macro name as well.

+--------------------------------------------------+
|------ FSP Performance Timestamp Table Dump ------|
+--------------------------------------------------+
| Perf-ID	Timestamp(ms)	       String/GUID |
+--------------------------------------------------+
    0	          460253    SEC/52c05b14-0b98-496c-bc3b04b50211d680
   50	          460263    PEI/52c05b14-0b98-496c-bc3b04b50211d680
   40	          460274    PreMem/52c05b14-0b98-496c-bc3b04b50211d680