meta-qt5: update layer

* Pull in latest upstream/master content via 5.11 -> 5.12 merge
* Update Qt 5.12.0 submodules to latest revisions, including fix for
  unstable qtwebengine build (QTBUG-70914)
* Nativesdk packagegroup updated accordingly after default packages
  change in upstream/master commit: "3224b02 nativesdk-qtbase: use default PACKAGES"
  pulled in by merge commit 21f10e4 below.

Updates:
  aecbcd8 qt5: update submodules
  21f10e4 Merge remote-tracking branch 'qtyocto/5.11' into 5.12

Task-number: QTBUG-70847
Change-Id: I50cd486687a0fa8bb63d6960895ba7e6fc4fe3b3
Reviewed-by: Samuli Piippo <samuli.piippo@qt.io>

meta-boot2qt-distro/recipes-qt/packagegroups/nativesdk-packagegroup-b2qt-embedded-qt5-toolchain-host.bb

@@ -42,9 +42,9 @@ python __anonymous() {
 RDEPENDS_${PN} += "\
     nativesdk-packagegroup-b2qt-embedded-toolchain-host \
     nativesdk-qt3d-tools \
-    nativesdk-qtbase-tools \
-    nativesdk-qtbase-tools-dev \
-    nativesdk-qtbase-tools-staticdev \
+    nativesdk-qtbase \
+    nativesdk-qtbase-dev \
+    nativesdk-qtbase-staticdev \
     nativesdk-qtdeclarative-staticdev \
     nativesdk-qtdeclarative-tools \
     nativesdk-qtremoteobjects-tools \

scripts/manifest.xml

@@ -26,7 +26,7 @@
            path="sources/meta-openembedded"/>
   <project name="meta-qt5"
            remote="qtyocto"
-           revision="6aa1a8026b65c85a2ea35361939b6401f950cc2e"
+           revision="aecbcd8423e44b89bd187bf0ecf9caa14283e581"
            path="sources/meta-qt5"/>
   <project name="meta-mingw"
            remote="qtyocto"