Fix gofmt

Change-Id: Idce816555f5d785a401f876f899af29b98c9c064
diff --git a/common/arch.go b/common/arch.go
index 28b5dd6..4dd01c3 100644
--- a/common/arch.go
+++ b/common/arch.go
@@ -149,7 +149,7 @@
 
 		// X86 arch variants
 		X86_ssse3 interface{} `blueprint:"filter(android:\"arch_variant\")"`
-		X86_sse4 interface{} `blueprint:"filter(android:\"arch_variant\")"`
+		X86_sse4  interface{} `blueprint:"filter(android:\"arch_variant\")"`
 
 		// X86 cpu variants
 		Atom       interface{} `blueprint:"filter(android:\"arch_variant\")"`