Enable integrated assembler on OpenBSD/PPC32 by default, too.
From Brad Smith.

llvm-svn: 202967
diff --git a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp
index b30ca9e..fd9c836 100644
--- a/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp
+++ b/llvm/lib/Target/PowerPC/MCTargetDesc/PPCMCAsmInfo.cpp
@@ -75,7 +75,8 @@
   AssemblerDialect = 1;           // New-Style mnemonics.
 
   if (T.getOS() == llvm::Triple::FreeBSD ||
-      (T.getOS() == llvm::Triple::NetBSD && !is64Bit))
+      (T.getOS() == llvm::Triple::NetBSD && !is64Bit) ||
+      (T.getOS() == llvm::Triple::OpenBSD && !is64Bit))
     UseIntegratedAssembler = true;
 }