Move LinearAlloc to libhuwi

Change-Id: I1d8c99bdeef22ca569e1743cff6108f478737bc8
diff --git a/libs/hwui/Android.common.mk b/libs/hwui/Android.common.mk
index 5fca8ec..836f868 100644
--- a/libs/hwui/Android.common.mk
+++ b/libs/hwui/Android.common.mk
@@ -24,6 +24,7 @@
     thread/TaskManager.cpp \
     utils/Blur.cpp \
     utils/GLUtils.cpp \
+    utils/LinearAllocator.cpp \
     utils/SortedListImpl.cpp \
     AmbientShadow.cpp \
     AnimationContext.cpp \