QtConnectivity, QtDoc, QtMultimedia: set some configs enforcing

These are passing.  Make sure they stay that way.

Change-Id: I1c0b87f2e442b950443bdefc73a2449b8b2a76c9
Reviewed-by: Sergio Ahumada <sahumada@blackberry.com>
QtDeclarative: set linux-imx6-armv7a Ubuntu 12.04 x64 enforcing

This is passing.  Make sure it stays that way.

Change-Id: I46151ff245c6b6094b963018f6c8f00bff6013f0
Reviewed-by: Sergio Ahumada <sahumada@blackberry.com>