T0Lte: Add SPEN powersave mode from N7100

commit by sbrissen to cdma device tree

Change-Id: I318c36842335e640d7a649f3d51c88a5d23a0bb1
Merge branch 'cm-10.1' of git://github.com/CyanogenMod/android_device_samsung_t0lte into cm-10.1