meta-facebook: Add License file for fb-powerctrl

fb-powerctrl: Added missing License file and also updated inheriting
obmc-phosphor-systemd instead of systemd file for installing service
files.

Tested: Build tiogapass image and verified.

(From meta-facebook rev: 4855da8a80b24c732ac77ba527ce4320186e1fa3)

Change-Id: I0508e4db25abfdbdb53f632069ffc619195ea883
Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
Signed-off-by: Brad Bishop <bradleyb@fuzziesquirrel.com>
diff --git a/meta-facebook/meta-tiogapass/recipes-fbtp/fb-powerctrl/files/LICENSE b/meta-facebook/meta-tiogapass/recipes-fbtp/fb-powerctrl/files/LICENSE
new file mode 100644
index 0000000..2caf820
--- /dev/null
+++ b/meta-facebook/meta-tiogapass/recipes-fbtp/fb-powerctrl/files/LICENSE
@@ -0,0 +1,13 @@
+Copyright 2018 Facebook Inc
+
+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.