Enable host multilib

Change-Id: I17405452a141d9ce15e4093f6610e8a9eceb98a9
diff --git a/common/arch.go b/common/arch.go
index 6faef59..6865904 100644
--- a/common/arch.go
+++ b/common/arch.go
@@ -345,6 +345,12 @@
 		switch module.base().commonProperties.Compile_multilib {
 		case "common":
 			arches = append(arches, commonArch)
+		case "both":
+			arches = append(arches, x8664Arch, x86Arch)
+		case "first", "64":
+			arches = append(arches, x8664Arch)
+		case "32":
+			arches = append(arches, x86Arch)
 		default:
 			arches = append(arches, x8664Arch)
 		}