Change in flashrom[master]: ichspi: Rename HSFC_FDBC -> HSFC_FDBC_MASK

[Angel Pons (Code Review)]

Attention is currently required from: Subrata Banik, Nico Huber, Anastasia Klimchuk.
Angel Pons has posted comments on this change. ( https://review.coreboot.org/c/flashrom/+/62894 )

Change subject: ichspi: Rename HSFC_FDBC -> HSFC_FDBC_MASK
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Patch Set 6:

(1 comment)

File ichspi.c:

https://review.coreboot.org/c/flashrom/+/62894/comment/7d966a87_1c802c92 
PS4, Line 508: FDBC
> Hmmm, if the new macro name doesn't work nicely with the existing code, maybe it wasn't meant to be changed?

Or maybe it's worth updating all the mask macros along with the `pprint_reg` macro to avoid having to use `_pprint_reg` directly.