anahera: add menu button to keyboard
anahera: add menu button to keyboard

Adding the "hamburger" button to support non-EPS non KB_BL SKU

BRANCH=none
BUG=b:215038215
TEST=none

Signed-off-by: Boris Mittelberg <46897f4fb5cad4b1d5146ad1fd460d7f4825bbf7@google.com>
Change-Id: Icc922fc5b88e5cb84698761f541c7180e95a43c9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3451271
Reviewed-by: Devin Lu <052fe648504800b810f29702ef4f3db83fad68bf@quantatw.com>
Tested-by: Devin Lu <052fe648504800b810f29702ef4f3db83fad68bf@quantatw.com>
Reviewed-by: caveh jalali <08e24a66aefda7a55ca7d73f8903e0fb16eec763@chromium.org>

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