[ARM64] Ensure arm64_be is dealt with when emitting debug info.

This is a partial port of r204816 (cpirker "Elf support for MC-JIT
runtime dynamic linker") from AArch64 to ARM64.

llvm-svn: 207625
diff --git a/llvm/lib/MC/MCObjectFileInfo.cpp b/llvm/lib/MC/MCObjectFileInfo.cpp
index ba132f4..4abdde1 100644
--- a/llvm/lib/MC/MCObjectFileInfo.cpp
+++ b/llvm/lib/MC/MCObjectFileInfo.cpp
@@ -291,7 +291,8 @@
     }
   } else if (T.getArch() == Triple::aarch64 ||
              T.getArch() == Triple::aarch64_be ||
-             T.getArch() == Triple::arm64) {
+             T.getArch() == Triple::arm64 ||
+             T.getArch() == Triple::arm64_be) {
     // The small model guarantees static code/data size < 4GB, but not where it
     // will be in memory. Most of these could end up >2GB away so even a signed
     // pc-relative 32-bit address is insufficient, theoretically.