Change in coreboot[master]: mb/google/cherry: Add fast calibration support

[Rex-BC Chen (Code Review)]

Attention is currently required from: Hung-Te Lin.
Rex-BC Chen has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/54269 )

Change subject: mb/google/cherry: Add fast calibration support
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Patch Set 5:

(2 comments)

Commit Message:

https://review.coreboot.org/c/coreboot/+/54269/comment/fe118a53_7e9a04d6 
PS4, Line 7: Add fast calibration support
> We're not just doing fast calibration right? […]

this patch is only for dram-k.

File src/mainboard/google/cherry/sdram_configs.c:

https://review.coreboot.org/c/coreboot/+/54269/comment/4dcc9cd5_8faac4d4 
PS4, Line 8: Currently ddr_geometry and ddr_type are not used in Cherry.
> Do we need those info in future? […]

ddr_geometry and ddr_type  are only used on 8192 and not used on 8195.