qtwayland: bump SRCREV and update patchset

Signed-off-by: Simon Busch <morphis@gravedo.de>
qtbase: add patch for newer wayland-scanner qmake feature

For a more recent qtwayland version we need an udpated wayland-scanner.prf which is still
part of qtbase. The path attached is backported from the current 5.3 development tree.

Signed-off-by: Simon Busch <morphis@gravedo.de>
packagegroup-webos-ports-development: drop unneeded qtwayland-examples

Signed-off-by: Simon Busch <morphis@gravedo.de>