UPSTREAM: fix ENH_START_ADDR overflow

Fix enh_start_addr overflow when converting emmc enh_area which will
cause do_enh_area_set failure.

BUG=None
TEST=Compile

Signed-off-by: jason.zeng <jasonzvz@gmail.com>
Signed-off-by: Chris Ball <chris@printf.net>
(cherry picked from commit b4fe0c8c0e57a74c01755fa9362703b60d7ee49d)
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>

Change-Id: I6cfb0ca7237891058b90d989cac9c1330352eda5
Reviewed-on: https://chromium-review.googlesource.com/1114457
Commit-Ready: Gwendal Grignou <gwendal@chromium.org>
Tested-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
(cherry picked from commit 1c55306a49b32bbb8c65e1e5e9d630f6720a6810)
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/1137017
Reviewed-by: Wei-Han Chen <stimim@chromium.org>
1 file changed