Move implementations of matrix functions into driver/runtime.

Move the implementation of rsExtractFrustumPlanes and
rsIsSphereInFrustum from rs_math.rsh into driver/runtime. The old
implementation remains in place for older versions, and the move
occurs only for API level 24 and up.

Change-Id: I7661e71eb5d344e39fa84e0aa502c621936e68a0
Signed-off-by: Verena Beckham <verena@codeplay.com>
3 files changed