meta-qt5: update layer

changelog:
89ac66b Merge remote-tracking branch 'qtyocto/upstream/warrior' into 5.12
f087aeb Revert "qtbase: Adjust target mkspec settings"

Change-Id: I5999d5471d89b7f1895cd20ae73b4b432ecd933f
Reviewed-by: Samuli Piippo <samuli.piippo@qt.io>

scripts/manifest.xml

@@ -26,7 +26,7 @@
            path="sources/meta-openembedded"/>
   <project name="meta-qt5"
            remote="qtyocto"
-           revision="3c86e3c28f00129fd408f9ad8daddd034bb19161"
+           revision="89ac66bf3969b48eb771ef4c06a0b8df00fd178a"
            path="sources/meta-qt5"/>
   <project name="meta-mingw"
            remote="qtyocto"