atlas: add internal pullup to EC_WP_L
atlas: add internal pullup to EC_WP_L

we're missing an external pullup on EC_WP_L, so enable the internal
pullup on this pin.  this is not a permanent solution as the pullup is
to a different voltage rail - we'll implement the proper pullup on the
next board.

BUG=b:116670191
BRANCH=none
TEST=measured EC_WP_L voltage at 1.8v

Change-Id: Id1af96be18b4ea18a34a8154510d0d24a231f262
Signed-off-by: Caveh Jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1244384
Commit-Ready: caveh jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>
Tested-by: caveh jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>
Reviewed-by: Aseda Aboagye <12c9b286316a940fd31c24070da5ab64cdd4d0e7@chromium.org>

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