Change in coreboot[master]: use initial_lapicid() instead of opencoding it

[Angel Pons (Code Review)]

Attention is currently required from: Jason Glenesk, Raul Rangel, Anjaneya "Reddy" Chagam, Marshall Dawson, Jonathan Zhang, Johnny Lin, Paul Menzel, Arthur Heymans, Morgan Jang, Patrick Rudolph, Felix Held.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/55063 )

Change subject: use initial_lapicid() instead of opencoding it
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Patch Set 1:

(6 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/55063/comment/01103bc9_e6aa140e 
PS1, Line 7: opencoding
I believe `open coding` is spelled with a space

https://review.coreboot.org/c/coreboot/+/55063/comment/df06e502_7bcf519f 
PS1, Line 7: use
> Nit: Use

I'd also add a prefix:

src: Use initial_lapicid() ...

File src/drivers/amd/agesa/eventlog.c:

https://review.coreboot.org/c/coreboot/+/55063/comment/babf5a4e_1c374566 
PS1, Line 101: 	task->apic_id = (u8)initial_lapicid();
Would this work in x2APIC mode?

File src/drivers/amd/agesa/romstage.c:

https://review.coreboot.org/c/coreboot/+/55063/comment/60538480_9ef56621 
PS1, Line 39: u32
`unsigned int`

File src/soc/amd/stoneyridge/mca.c:

https://review.coreboot.org/c/coreboot/+/55063/comment/f2bc8f77_b407a836 
PS1, Line 169: uint32_t
`initial_lapicid()` returns `unsigned int`. Any reason to change this type, though?

https://review.coreboot.org/c/coreboot/+/55063/comment/dd8bef98_a99942b7 
PS1, Line 171: %d
Needs to be changed to `%u` now that `core` is of unsigned type. Even easier would be to leave the type of `core` as-is, as done for Picasso.