serranoltexx: Adding setprop entries for tcp delayed ack for Wifi & LTE

TCP delayed ack settings are expected to be modified when the
Wifi or LTE connection is established and the configurations
will be reverted back when the Wifi connection is terminated.
The change also modifies the /sys/kernel/ipv4/tcp_delack_seg
and /sys/kernel/ipv4/tcp_use_useconfig file owner to "system"

Requires: https://www.codeaurora.org/cgit/quic/la/kernel/msm/commit/?h=kk_2.7-stable&id=73989a4b345bba0efca96cc86b0258e83884ff63

Change-Id: I619e71ebc9ad84771114f589a3b18f3ad56d5ccd
Merge branch 'cm-11.0' of https://github.com/CyanogenMod/android_device_samsung_serranoltexx into cd-4.4