Add a new variant device jfltezm.

jfltezm is China Mobile edition Samsug galaxy S4.
It's known as Samsung GT-I9508.
jfltezm's hardware is the same with jfltexx, but support TD-SCDMA network.

Change-Id: I3088e1c996fe312594e1fba1dbddf60aa87289d1
Merge branch 'cm-10.2' of git://github.com/CyanogenMod/android_device_samsung_jf-common into beanstalk
Revert "jf: don't build without proprietary blobs"

This reverts commit 2964c9f610ad9399967b5a4fd942065a3be0be6a.

Change-Id: I22cd2909875d8f7e476e87c2ee4226509aebe6b5
Merge branch 'cm-10.2' of git://github.com/CyanogenMod/android_device_samsung_jf-common into beanstalk