Disable EGL hibernation due to jank

Hibernating EGL takes a long time (>100 ms) and blocks all other
rendering. During window animations, the outgoing activity begins
hibernation before the animation stops, causing visible stutter.
Hibernation is still available by setting 'BOARD_ALLOW_EGL_HIBERNATION
:= true' in the devices BoardConfig.mk

Change-Id: Iab4e00723a1adcd97481e81b2efdc821b3e9712f
diff --git a/opengl/libs/Android.mk b/opengl/libs/Android.mk
index 66bc64d..c5c2618 100644
--- a/opengl/libs/Android.mk
+++ b/opengl/libs/Android.mk
@@ -36,6 +36,10 @@
 LOCAL_CFLAGS += -fvisibility=hidden
 LOCAL_CFLAGS += -DEGL_TRACE=1
 
+ifeq ($(BOARD_ALLOW_EGL_HIBERNATION),true)
+  LOCAL_CFLAGS += -DBOARD_ALLOW_EGL_HIBERNATION
+endif
+
 ifeq ($(TARGET_BOARD_PLATFORM),msm7k)
 LOCAL_CFLAGS += -DADRENO130=1
 endif