Fix compilation for Android ARMv5

We have to use the 4.4.3 compiler toolchain for producing binaries
for ARMv5 on Android, since the 4.7 toolchain has a regression for
this architecture. The regression has been fixed, but the fix has
not been released yet, so until it has, we need to use the 4.4.3.
However, the 4.4.3 toolchain has a different bug, which breaks
compilation in qtimageformats with a message about redefinition of
uint. This works around that bug for Android builds. When the
patched compiler has been released, we can revert this.

Task-number: QTBUG-30921
Change-Id: I620c186c6e932413a4de1dd331fbf4b9401f2e72
Reviewed-by: Paul Olav Tvete <paul.tvete@digia.com>