Change in coreboot[master]: cpu/x86/smm,lib/cbmem_console: Enable CBMEMC when using DEBUG_SMI

[Arthur Heymans (Code Review)]

Attention is currently required from: Arthur Heymans, Raul Rangel, Nico Huber, Martin Roth, Tim Wawrzynczak, Julius Werner, Rob Barnes, Karthik Ramasubramanian.
Arthur Heymans has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/62355 )

Change subject: cpu/x86/smm,lib/cbmem_console: Enable CBMEMC when using DEBUG_SMI
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Patch Set 1:

(1 comment)

File src/include/cpu/x86/smm.h:

https://review.coreboot.org/c/coreboot/+/62355/comment/c7de6a17_6bf5c6ee 
PS1, Line 64: void *cbmemc;
            : 	u32 cbmemc_size;
nit: care to swap those around? That makes the struct entries aligned on 64bit mode. Sidenote: no reason for __packed here anymore, but that's beyond the scope for now.