Change in coreboot[master]: elog: Support logging CSE Lite info in elog

[Furquan Shaikh (Code Review)]

Attention is currently required from: Martin Roth, Jamie Ryu, Rizwan Qureshi, Sridhar Siricilla, Krishna P Bhat D, Patrick Rudolph, Karthik Ramasubramanian.
Furquan Shaikh has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/50472 )

Change subject: elog: Support logging CSE Lite info in elog
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Patch Set 6:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/50472/comment/38ab46b1_ad8ad1ee 
PS6, Line 25: 2 | 2021-01-21 08:46:18 | CSE Info | Lite | 13.50.0.1269 | 13.50.0.1269
            : | YES | 0x5 | 0x3 | RO
            : 3 | 2021-01-21 08:46:21 | CSE Info | Lite | 13.50.0.1269 | 13.50.0.1269
            : | YES | 0x5 | 0x0 | RW
These two entries can be a bit confusing. Should we think about adding these events in ramstage after cse_fw_sync happens so that if the platform reboots, we only capture this once i.e. after the sync?

https://review.coreboot.org/c/coreboot/+/50472/comment/84776f2e_e6b22772 
PS6, Line 29: 4 | 2021-01-21 08:46:25 | System boot | 3098
Humm.. this is what I was referring to. "System boot" should be the first entry for a fresh boot and all events that happen after that. It is helpful in building the timeline.