Revert "Remove interpreter entrypoint in ArtMethod."

Build failures on bots. Investigating.

This reverts commit fa2c054b28d4b540c1b3651401a7a091282a015f.

Change-Id: Id65b2009aa66cb291fb8c39758a58e0b0d22616c
diff --git a/runtime/base/bit_utils.h b/runtime/base/bit_utils.h
index 6f45dc8..7972158 100644
--- a/runtime/base/bit_utils.h
+++ b/runtime/base/bit_utils.h
@@ -137,7 +137,7 @@
 }
 
 template<int n, typename T>
-static constexpr bool IsAligned(T x) {
+static inline bool IsAligned(T x) {
   static_assert((n & (n - 1)) == 0, "n is not a power of two");
   return (x & (n - 1)) == 0;
 }