peach_pit: enable EC support using devfs interface

This enables EC support for peach_pit now that the devfs interface
is working.

BUG=chrome-os-partner:19077
BRANCH=peach_pit
TEST=compiled and run on peach_pit (see below for output)

localhost ~ # mosys -k ec info
vendor="stm" name="stm32l15x" fw_version="pit_v1.1.880-7e24fdb"

Change-Id: I7a94bcdebc067d7a331ae9feef32804f78cdb5fc
Reviewed-on: https://gerrit.chromium.org/gerrit/57426
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: David Hendricks <dhendrix@chromium.org>
Commit-Queue: David Hendricks <dhendrix@chromium.org>
2 files changed