qt5: version bump

-bump version to 5.2.0
-remove unneeded patches
-remove invalid configure options

[Peter: uclibc-no-lfs + qatomic patches still needed, new patch for uClibc]
Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>