misc/cgo: gofmt testdata files

Change-Id: I64e05a1f768cb57194506021bb7fdca0ad19bf1c
Reviewed-on: https://go-review.googlesource.com/c/go/+/168461
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

misc/cgo/testplugin/testdata/iface/main.go

@@ -5,9 +5,10 @@
 package main
 
 import (
-	"testplugin/iface_i"
 	"log"
 	"plugin"
+
+	"testplugin/iface_i"
 )
 
 func main() {

misc/cgo/testplugin/testdata/plugin1/plugin1.go

@@ -8,8 +8,9 @@ package main
 import "C"
 
 import (
-	"testplugin/common"
 	"reflect"
+
+	"testplugin/common"
 )
 
 func F() int {

misc/cgo/testplugin/testdata/plugin2/plugin2.go

@@ -12,9 +12,10 @@ import "C"
 // void cfunc() {} // uses cgo_topofstack
 
 import (
-	"testplugin/common"
 	"reflect"
 	"strings"
+
+	"testplugin/common"
 )
 
 func init() {

misc/cgo/testshared/testdata/exe/exe.go

 package main
 
 import (
-	"testshared/depBase"
 	"os"
 	"reflect"
 	"runtime"
+
+	"testshared/depBase"
 )
 
 // Having a function declared in the main package triggered