Provide an override for the RS driver.

Change-Id: Id291dc3e135d09dbbe8b2e8947b8c7752b28eb4d
diff --git a/BoardConfig.mk b/BoardConfig.mk
index 3ddf252..0d65071 100755
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -44,6 +44,8 @@
 
 BOARD_EGL_CFG := device/samsung/manta/egl.cfg
 
+OVERRIDE_RS_DRIVER := libRSDriverArm.so
+
 #BOARD_USES_HGL := true
 #BOARD_USES_OVERLAY := true
 USE_OPENGL_RENDERER := true