move stylus hotspot to center (thanks lessaj)

(cherry picked from commit 982273a0ecabedbc0cc5624f1e9ddd80e1a718e2)
enabled hardware keys

(cherry picked from commit a8a0bf43b9c33c44ecf436a4967dad7a28b4ed5e)

(cherry picked from commit 3f15d8d73ee4f42c023dab35284bf1eea62819ed)
1/2 3GB dalvik heap and hwui memory (Originally 2GB)

2/2 in frameworks/native https://github.com/cmRemiX/android_frameworks_native/commit/86a3a19407b3affd834b4133694828d256ed04ab

(cherry picked from commit 28ab9bb62c8ebe8fc363f96ba5295479064acd33)

(cherry picked from commit 60e1832c2e56a3093389f4d8600f0fb1d5de2db9)
set permission for frandom

(cherry picked from commit 5b3fc77ae0b5963b8efe2f7dcc2c702d4dde7ce9)

(cherry picked from commit e83220259d817e6029a288ba3d99ee0d60290209)
disabled DEXPREOPT

(cherry picked from commit fc92ef2254d96628cb70655a1c766ba4f0674b47)