[S] Change in coreboot[master]: soc/intel/ehl: Support maximum memory frequency selection

[build bot (Jenkins) (Code Review)]

Attention is currently required from: Lean Sheng Tan, Werner Zeh.

build bot (Jenkins) has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/68097 )

Change subject: soc/intel/ehl: Support maximum memory frequency selection
......................................................................

Patch Set 2:

(1 comment)

Commit Message:

Robot Comment from checkpatch (run ID jenkins-coreboot-checkpatch-159635):
https://review.coreboot.org/c/coreboot/+/68097/comment/a0352694_915281e4 
PS2, Line 13:  - Define maximum memory frequency in mainboard devicetree.cb
Possible unwrapped commit description (prefer a maximum 72 chars per line)