qtwayland: do not reference private modules in cmake Qt5WaylandClient

The files referenced are not installed causing trouble in projects using
Qt5WaylandClientConfig.cmake:

| CMake Error at /home/superandy/tmp/oe-core-glibc/work/cortexa7t2hf-neon-vfpv4-mortsgna-linux-gnueabi/liri-shell/0.9.0+gitAUTOINC+42bd7f4610-r0/recipe-sysroot/usr/lib/cmake/Qt5WaylandClient/Qt5WaylandClientConfig.cmake:110 (find_package):
|   Could not find a package configuration file provided by
|   "Qt5LinuxAccessibilitySupport" (requested version 5.13.0) with any of the
|   following names:
|
|     Qt5LinuxAccessibilitySupportConfig.cmake
|     qt5linuxaccessibilitysupport-config.cmake

Fixes: QTBUG-76042 [1]

Upstream-Status: Applied [2]

[1] https://bugreports.qt.io/browse/QTBUG-76042
[2] https://code.qt.io/cgit/qt/qtwayland.git/commit/?id=f4636b934f90b2a07b09f1925a86440cf1944d08

Signed-off-by: Andreas Müller <schnitzeltony@gmail.com>

recipes-qt/qt5/qtwayland/0001-Fix-use-of-private-dependency.patch

@@ -0,0 +1,36 @@
+From f4636b934f90b2a07b09f1925a86440cf1944d08 Mon Sep 17 00:00:00 2001
+From: Pier Luigi Fiorini <pierluigi.fiorini@liri.io>
+Date: Wed, 24 Jul 2019 23:40:55 +0200
+Subject: [PATCH] Fix use of private dependency
+
+With 0761173a, Linux SPI Accessibility bridge was added to
+the Wayland QPA plugin, but this had a bad side-effect to
+QtWaylandClient.
+
+Linux Accessibility support is a private module, this means we have
+to link to it with QT_PRIVATE not QT, otherwise CMake and pkg-config
+files for Qt5WaylandClient will depend on it.
+
+Change-Id: I6182267f97adc2cd5bd66895df148a6a45614f45
+Fixes: QTBUG-76042
+Reviewed-by: Frederik Gladhorn <frederik.gladhorn@qt.io>
+---
+ src/client/client.pro | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/client/client.pro b/src/client/client.pro
+index db91bd69..4233ac95 100644
+--- a/src/client/client.pro
++++ b/src/client/client.pro
+@@ -20,7 +20,7 @@ qtConfig(xkbcommon) {
+ }
+ 
+ qtHaveModule(linuxaccessibility_support_private): \
+-    QT += linuxaccessibility_support_private
++    QT_PRIVATE += linuxaccessibility_support_private
+ 
+ QMAKE_USE += wayland-client
+ 
+-- 
+2.21.0
+

recipes-qt/qt5/qtwayland_git.bb

@@ -13,6 +13,8 @@ LIC_FILES_CHKSUM = " \
     file://LICENSE.FDL;md5=6d9f2a9af4c8b8c3c769f6cc1b6aaf7e \
 "
 
+SRC_URI += "file://0001-Fix-use-of-private-dependency.patch"
+
 PACKAGECONFIG ?= " \
     wayland-client \
     wayland-server \