Add license headers to new Go files

internal/fb/ctypes.go

@@ -2,6 +2,20 @@
 
 // generate with: GOARCH=arm go tool cgo -godefs ctypes.go | gofmt > types_arm.go
 
+// Copyright 2018 Axel Wagner
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
 package fb
 
 /*

internal/fb/fb.go

@@ -1,3 +1,18 @@
+// Copyright 2018 Axel Wagner
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package fb implements framebuffer interaction via ioctls and mmap.
 package fb
 
 import (