galaxys2: add AdvancedDisplay

This partially reverts commit 99d12c6a903a3199ba4956add53b82837d90ca9c,
we want to reuse some of it. The implementation appears to be fully
compatible with smdk4412's, so let's make this a common thing at
some point

Change-Id: I080484ad010f881a22a4486a6c082d0fbc17a529
Revert "galaxys2: remove noise suppression overlay"

This reverts commit ee7630eef4e5566f079b6739b96d39a7a54710f3.
media_codecs: Don't try to use absent VP8 decoder

Change-Id: Iff6813a4a29d36e16564e608010520520d60d7fa
Optimized all png's.

Change-Id: I6b9a374b08a567e92c024df8d16844e7859f8cf7
to: optipng -nc -nb -o7
wifi.supplicant_scan_interval: 15 -> 30

Change-Id: I93a160e02367ec936980751846338e3fe281fcf6
galaxys2: enable swipe controls in recovery

Change-Id: I43a2480f2de376113d0b73340967dcc3fb1173df
galaxys2: fix external sdcard mountpoint

requires https://github.com/lion0738/android_frameworks_base/commit/74f0988b7ac6b1b4d5c6317f778fde911c588560

Change-Id: Ic084ca17f7bda633df4cc1802e534e5ef1e2a937
Revert "Exynos camera fixes"

This reverts commit fc6d124de33545f46ee3b62afc00838d5d42d265.