wlconf: Fix compilation

Fixes the following error:

target thumb C: wlconf <= hardware/ti/wlan/mac80211/ti-utils/wlconf/main.c
hardware/ti/wlan/mac80211/ti-utils/wlconf/main.c:32:16: error: static declaration of 'getline' follows non-static declaration
In file included from hardware/ti/wlan/mac80211/ti-utils/wlconf/main.c:20:0:
bionic/libc/include/stdio.h:228:10: note: previous declaration of 'getline' was here

Change-Id: Ic63a77ae94192a6e3ce3f94306ed64bc587b4380
Merge "wlconf: Fix compilation" into cm-10.2