Between v2 and the now merged v3 of commit 42d914f20c ("Documentation:
Enable doxygen-awesome-css") the GENERATE_TREEVIEW = YES was dropped
because it defaults to YES according to the doxygen web documentation.
Unfortunately for doxygen < 1.13.0 the default was NO. Fix the value to
YES so that doxygen-awesome-css works properly even with older versions
of doxygen.
Fixes: 42d914f20c ("Documentation: Enable doxygen-awesome-css")
Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com>
Tested-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com>
Reviewed-by: Barnabás Pőcze <barnabas.pocze@ideasonboard.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>