Revert "Revert "base: Add more bit utils and bit struct class""

This reverts commit 5e008b3c5a907015116aa95623205ac8fc2c6768.

Change-Id: I05d26dd4a1f8d35e4377f65e209587b67b2ca04e
diff --git a/runtime/Android.bp b/runtime/Android.bp
index 711bc65..ea776e7 100644
--- a/runtime/Android.bp
+++ b/runtime/Android.bp
@@ -530,6 +530,7 @@
         "barrier_test.cc",
         "base/arena_allocator_test.cc",
         "base/bit_field_test.cc",
+        "base/bit_struct_test.cc",
         "base/bit_utils_test.cc",
         "base/bit_vector_test.cc",
         "base/hash_set_test.cc",