Merge remote-tracking branch 'remotes/afaerber/tags/qom-devices-for-2.0' into staging

QOM/QTest infrastructure fixes

* Relicensing of FWPathProvider interface
* Clean up all targets' qtests

# gpg: Signature made Mon 07 Apr 2014 17:56:13 BST using RSA key ID 3E7E013F
# gpg: Good signature from "Andreas Färber <afaerber@suse.de>"
# gpg:                 aka "Andreas Färber <afaerber@suse.com>"

* remotes/afaerber/tags/qom-devices-for-2.0:
  tests: Update check-clean rule
  fw-path-provider: Change GPL version to 2+

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>