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/Usage.cpp b/services/audiopolicy/engineconfigurable/src/Usage.cpp
index 5d20828..8c0dfba 100644
--- a/services/audiopolicy/engineconfigurable/src/Usage.cpp
+++ b/services/audiopolicy/engineconfigurable/src/Usage.cpp
@@ -18,10 +18,8 @@
 
 #include "Usage.h"
 
-namespace android
-{
-namespace audio_policy
-{
+namespace android {
+namespace audio_policy {
 
 status_t Element<audio_usage_t>::setIdentifier(audio_usage_t identifier)
 {