honeybuns: fix cbi write protect check
honeybuns: fix cbi write protect check

This CL fixes the config options used to ignore the hardware write
protection signal to the CBI EEPROM. Honeybuns is only using this to
store the user MF prefence bit. The config option that had been used
to flip the polarity of WP_L (the default write protect signal) has
been removed.

BRANCH=quiche
BUG=b:164157329
TEST=Verfied that MF preference bit is stored in CBI.

Signed-off-by: Scott Collyer <7d40b3eb9e17bf55d972074a5e77a7ea4159f9dd@google.com>
Change-Id: I4f5cbe4b20dd2347e71429dadaf9f0c103b222de
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3139097
Tested-by: Scott Collyer <7d40b3eb9e17bf55d972074a5e77a7ea4159f9dd@chromium.org>
Reviewed-by: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>
Commit-Queue: Scott Collyer <7d40b3eb9e17bf55d972074a5e77a7ea4159f9dd@chromium.org>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec