Add an enum for the number of flash regions

Add an enum for the number of flash regions so we can keep track of all
the possible regions.

(This is used in U-Boot which wants to declare an array of all possible
regions.)

BUG=chromium:244019
BRANCH=none
TEST=manual
Build EC for pit.

Change-Id: I494d857f1388dcc5c64b1cd580cf0084bdef0212
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/62701
Reviewed-by: Randall Spangler <rspangler@chromium.org>
1 file changed