* gnu/packages/patches/qtwayland-6-update-wayland-xml.patch: new patch.
* gnu/local.mk (dist_patch_DATA): Registered it.
* gnu/packages/qt.scm (qtwayland-6)[source]: Use it.
[arguments]<#:phases>: Adjust disable-failing-tests to disable tst_scaling
test.
Change-Id: I23aa602ce572e2a1eb5092bada97a84ba4af596e