soc/amd/glinda,mendocino,phoenix/espi_util: add comment about register

Even though the register name begins with ESPI, it resides in the SPI
registers and not in the eSPI registers, so add a comment to point this
out to hopefully avoid some confusion.

Signed-off-by: Felix Held <felix-coreboot@felixheld.de>
Change-Id: I9f8d15ceb98f51aad0816021f98ec5c78953e7f3
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72122
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>

0 files changed, 0 insertions, 0 deletions