webos_qmake5: export STAGING_INCDIR
webos_qmake5: export STAGING_INCDIR

- This is needed by webappmanager recipes

Open-webOS-DCO-1.0-Signed-off-by: Eric Blade <b524284ddb6966915c8829138034fa9121b6e3af@palm.com>

Change-Id: I3df997cca5fbfac6d2b70c24cab247f4c82613c9
Reviewed-on: https://g2g.palm.com/1698
Reviewed-by: Susan Montooth <be0b8b1fe2cc6a744be9b1ae6516e077aa323e09@lge.com>
Reviewed-by: Build Verification
Reviewed-by: Eric Blade <b524284ddb6966915c8829138034fa9121b6e3af@palm.com>
Tested-by: Eric Blade <b524284ddb6966915c8829138034fa9121b6e3af@palm.com>

Garfonso/meta-webos-ports,openwebos/meta-webos,openwebos/meta-webos,Garfonso/meta-webos-ports,nizovn/meta-webos-ports,nizovn/meta-webos-ports,openwebos/meta-webos,openwebos/meta-webos