galaxys2-common: Update RIL header to v9 [2/2]

Change-Id: I695beeacdad9d8a371b566b6d30305ec6c6248ba
galaxys2: Change PNGs from RGBA to RGB

Current charger graphics engine doesn't like RGBA

Change-Id: I38b8d90a6da5f63b123438ec3d8eae660ce7cf6c
mc1n2: Change DNG threshold from -60 dB to -78 dB

Based on some user testing, a threshold of -60 dB is too loud and causes
DNG to activate in cases where it shouldn't.

That users' results indicate good behavior at -78 dB.  Let's switch to
that for now and see how it works when provided to a wider audience.

http://jira.omnirom.org/browse/OMNI-561

Change-Id: Ic7fe34260f55d645714192e029acf533afe21fb9
s2: fix wifi

Change-Id: Icd22ad92e4b1e0e50326e9c5edd302dee1dab401
Merge "galaxys2-common: Update RIL header to v9 [2/2]" into android-4.4
Galaxys2: Fix the inability to mount/unmount sdcard

Change-Id: Ifddbf979e5de937d2b2b3d850ccb66c3d731bc35
Galaxys2-common: add back SamsungServiceMode

Change-Id: I9096f7e048005bb9de52ea5f3053578e31aadf04