Rework our customizations and apply them as full files instead of patches to
make it easier for users to inspect.
Instead of having one cmake file for all backends, provide a separate file for
each backend and select it dynamically based on the selected backend. To do
this, create a new LVGL_BACKEND variable in lv-conf.inc.
While at it, increase the demo's memory from 256 KiB to 2 MiB to ensure that
the wayland flavor of the demo works properly.
https://onedigi.atlassian.net/browse/DEL-9925
Signed-off-by: Gabriel Valcazar <gabriel.valcazar@digi.com>
Gabriel Valcazar