Mark ARM subtarget features that are available for the assembler.

llvm-svn: 117929
diff --git a/llvm/test/MC/ARM/neon-bitcount-encoding.s b/llvm/test/MC/ARM/neon-bitcount-encoding.s
index 1693711..85ebcc0 100644
--- a/llvm/test/MC/ARM/neon-bitcount-encoding.s
+++ b/llvm/test/MC/ARM/neon-bitcount-encoding.s
@@ -1,4 +1,4 @@
-// RUN: llvm-mc -triple arm-unknown-unkown -show-encoding < %s | FileCheck %s
+// RUN: llvm-mc -mcpu=cortex-a8 -triple arm-unknown-unkown -show-encoding < %s | FileCheck %s
 // XFAIL: *
 
 // CHECK: vcnt.8	d16, d16                @ encoding: [0x20,0x05,0xf0,0xf3]