Camera2: Use qcamera namespace and fix license text.

Use a namespace other than android to avoid name conflict.

Change-Id: I0d74b25ef6ca3bfc7d21399762b6f030ecb89c16
diff --git a/QCamera2/HAL/QCameraStateMachine.cpp b/QCamera2/HAL/QCameraStateMachine.cpp
index d051a51..3d7a228 100644
--- a/QCamera2/HAL/QCameraStateMachine.cpp
+++ b/QCamera2/HAL/QCameraStateMachine.cpp
@@ -34,7 +34,7 @@
 #include "QCamera2HWI.h"
 #include "QCameraStateMachine.h"
 
-namespace android {
+namespace qcamera {
 
 /*===========================================================================
  * FUNCTION   : smEvtProcRoutine
@@ -2150,4 +2150,4 @@
     }
 }
 
-}; // namespace android
+}; // namespace qcamera