[S] Change in coreboot[main]: soc/intel/common: Add low battery shutdown function

[Julius Werner (Code Review)]

Attention is currently required from: Angel Pons, Intel coreboot Reviewers, Karthik Ramasubramanian, Subrata Banik.

Julius Werner has posted comments on this change by Subrata Banik. ( https://review.coreboot.org/c/coreboot/+/86361?usp=email )

Change subject: soc/intel/common: Add low battery shutdown function
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Patch Set 3:

(1 comment)

File src/include/reset.h:

https://review.coreboot.org/c/coreboot/+/86361/comment/84130a44_e544422e?usp... :
PS3, Line 51:  * 2. Introduces a short delay to allow time for logging.
> How is the short delay allowing logging ? If this is just for logging why is it arbitrarily 3 second […]

I think the time is really to allow the user to see the low battery screen (and the comment here should reflect that). Maybe we should wrap the code below in `#if CONFIG(PLATFORM_HAS_LOW_BATTERY_INDICATOR)` to make it clear that this is only meant for use together with the splash screen indicator, even though it's gonna get linker-GCed when disabled anyway.