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/EngineInstance.cpp b/services/audiopolicy/engineconfigurable/src/EngineInstance.cpp
index 9aa89b2..2442590 100644
--- a/services/audiopolicy/engineconfigurable/src/EngineInstance.cpp
+++ b/services/audiopolicy/engineconfigurable/src/EngineInstance.cpp
@@ -21,10 +21,8 @@
 
 using std::string;
 
-namespace android
-{
-namespace audio_policy
-{
+namespace android {
+namespace audio_policy {
 
 EngineInstance::EngineInstance()
 {