add explicit alignment directives to assure arm code is 4-byte aligned

git-svn-id: https://llvm.org/svn/llvm-project/compiler-rt/trunk@102030 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/arm/muldf3vfp.S b/lib/arm/muldf3vfp.S
index bb0fd43..cb503d3 100644
--- a/lib/arm/muldf3vfp.S
+++ b/lib/arm/muldf3vfp.S
@@ -15,6 +15,7 @@
 // Multiplies two double precision floating point numbers using the Darwin
 // calling convention where double arguments are passsed in GPR pairs
 //
+	.align 2
 DEFINE_COMPILERRT_FUNCTION(__muldf3vfp)
 	fmdrr	d6, r0, r1		// move first param from r0/r1 pair into d6
 	fmdrr	d7, r2, r3		// move second param from r2/r3 pair into d7