ec: Add lds dependencies to the dependency list.
ec: Add lds dependencies to the dependency list.

With this change, when we modify some config file related
to space, the lds is recompiled properly.

TEST=Check that when chip/stm32/configXX.h is modified,
ec.RO.lds is recompiled.
BRANCH=ToT
BUG=None

Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/230908
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Reviewed-by: Vincent Palatin <vpalatin@chromium.org>
(cherry picked from commit 042dcf8c8a402407d181aa65ae92b9c131381007)
Signed-off-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>

Change-Id: I0a49065e59f00dd37d945d9593126ab9fd1598b5
Reviewed-on: https://chromium-review.googlesource.com/231063
Reviewed-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>
Commit-Queue: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>
Tested-by: Duncan Laurie <70662b43bc1a20b57ded72a2b08be88dd0da4841@chromium.org>

thehobn/ec,thehobn/ec,thehobn/ec,thehobn/ec