yukawa: add TARGET_USE_TABLET_LAUNCHER build flag

The regular UI shown for Yukawa is Android TV. For some boards, like
Khadas VIM3 and Khadas VIM3L, we might want to have the default tablet
launcher instead.

Add TARGET_USE_TABLET_LAUNCHER to build with tablet launcher.

Test: make TARGET_USE_TABLET_LAUNCHER=true TARGET_VIM3=true -j40
Change-Id: Ic49c8f6d7abecbbda7c37448047e4d6cfcf50184
Signed-off-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
1 file changed