Change in coreboot[master]: xeon_sp/cpx: Add weak functions for mainboard to override meminfo

[Angel Pons (Code Review)]

Attention is currently required from: Marc Jones, Jonathan Zhang, Johnny Lin, Jingle Hsu, Morgan Jang, Patrick Rudolph, Tim Chu.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/49893 )

Change subject: xeon_sp/cpx: Add weak functions for mainboard to override meminfo
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Patch Set 2:

(2 comments)

File src/soc/intel/xeon_sp/cpx/romstage.c:

https://review.coreboot.org/c/coreboot/+/49893/comment/6608086c_536448a5 
PS2, Line 24: mainboard_memory_max_capacity_mib
Return the maximum memory supported by one processor, multiplied by CONFIG_MAX_SOCKET?

https://review.coreboot.org/c/coreboot/+/49893/comment/336b7944_cdec80bb 
PS2, Line 68: mainboard_memory_max_number_of_devices()
CONFIG_DIMM_MAX