init: Support power off charging on kitkat bootloader

Change-Id: I76ecfccb6ac52c422e5dba476bec6128b1292a17
jf: enable f2fs support

Change-Id: I7990fd75e2a7271965b7abcbdaf49e9ee944270c
Merge "init: Support power off charging on kitkat bootloader" into cm-11.0
Add ignore flags for warnings in GCC4.9 kernel compilation
Enable XZ compression because recovery.img is too large
Merge branch 'cm-11.0' of https://github.com/xsynergy510x/android_kernel_samsung_jf into cm-11.0