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/Element.h b/services/audiopolicy/engineconfigurable/src/Element.h
index 52e77e5..1b55c8c 100644
--- a/services/audiopolicy/engineconfigurable/src/Element.h
+++ b/services/audiopolicy/engineconfigurable/src/Element.h
@@ -22,10 +22,8 @@
 #include <system/audio.h>
 #include <utils/Log.h>
 
-namespace android
-{
-namespace audio_policy
-{
+namespace android {
+namespace audio_policy {
 
 template <typename Key>
 class Element