audiopolicy: engineconfigurable: apply coding style

Test: make

Change-Id: Ibfa26a5893e4481619f407f9b1cb679f96e8a7e9
Signed-off-by: François Gaffie <francois.gaffie@renault.com>
diff --git a/services/audiopolicy/engineconfigurable/src/Collection.h b/services/audiopolicy/engineconfigurable/src/Collection.h
index b72ded8..1f8ed8d 100644
--- a/services/audiopolicy/engineconfigurable/src/Collection.h
+++ b/services/audiopolicy/engineconfigurable/src/Collection.h
@@ -28,10 +28,8 @@
 #include <stdint.h>
 #include <string>
 
-namespace android
-{
-namespace audio_policy
-{
+namespace android {
+namespace audio_policy {
 
 /**
  * Collection of policy element as a map indexed with a their UID type.