Add some missing libraries for shared library builds on iOS.

Static linking hides the fact that these dependencies are necessary.

Change-Id: I0af58b840bc52dfd81b79c8ced5ee79def35895a
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@theqtcompany.com>

src/gui/accessible/accessible.pri

@@ -17,5 +17,9 @@ contains(QT_CONFIG, accessibility) {
     HEADERS += accessible/qaccessiblebridge.h
     SOURCES += accessible/qaccessiblebridge.cpp
 
-    OBJECTIVE_SOURCES += accessible/qaccessiblecache_mac.mm
+    mac {
+        OBJECTIVE_SOURCES += accessible/qaccessiblecache_mac.mm
+
+        LIBS_PRIVATE += -framework Foundation
+    }
 }

src/network/access/access.pri

@@ -78,6 +78,8 @@ ios {
 
     OBJECTIVE_SOURCES += \
         access/qnetworkreplynsurlconnectionimpl.mm
+
+    LIBS_PRIVATE += -framework Foundation
 }
 
 include($$PWD/../../3rdparty/zlib_dependency.pri)