default: Update to Android-4.4.4_r1

Change-Id: I4c3b28e6a838f047ba6ec791329055898b81d36f
Replace hardware/qcom/keymaster path to new repository android_hardware_qcom_keymaster

Change-Id: Ia06bdfcd40a7d1430e1c5a3fbdaaca84a0970a05
Merge branch 'android-4.4' of https://github.com/omnirom/android into android-4.4

Conflicts:
	default.xml
Merge branch 'android-4.4' into Kitkat