Audio Policy Refactor: reorganise headers inclusion

This patch reoganises the headers inclusion in order to prepare
the split of managerdefault into a manager and a separated lib
of pillar policy elements.

It also moves back the isStrategyActive to the manager to avoid
any dependancies from this pillars to the manager.

Change-Id: I1a35c45d86db7a3878a40dc7d6858dfea37c5ac9
Signed-off-by: François Gaffie <francois.gaffie@intel.com>
diff --git a/services/audiopolicy/managerdefault/HwModule.h b/services/audiopolicy/managerdefault/HwModule.h
index f814dd9..d9e6cdf 100644
--- a/services/audiopolicy/managerdefault/HwModule.h
+++ b/services/audiopolicy/managerdefault/HwModule.h
@@ -14,8 +14,20 @@
  * limitations under the License.
  */
 
+#pragma once
+
+#include "Devices.h"
+#include <utils/RefBase.h>
+#include <utils/String8.h>
+#include <utils/Errors.h>
+#include <utils/Vector.h>
+#include <system/audio.h>
+#include <cutils/config_utils.h>
+
 namespace android {
 
+class IOProfile;
+
 class HwModule : public RefBase
 {
 public: