graphics: move libgralloc1-adapter

Move libgralloc1-adapter from 2.0/default/ to
2.0/utils/gralloc1-adapter/.  Fix build issues after the move.

Test: builds
Change-Id: I674fe60c724a4ffc1540c796b92209a1dbf36438
diff --git a/graphics/allocator/2.0/utils/OWNERS b/graphics/allocator/2.0/utils/OWNERS
new file mode 100644
index 0000000..3aa5fa1
--- /dev/null
+++ b/graphics/allocator/2.0/utils/OWNERS
@@ -0,0 +1,4 @@
+# Graphics team
+jessehall@google.com
+olv@google.com
+stoza@google.com