Hidlized version of IMemory.

- Add hidl_memory type.
- Add android.hidl.memory@1.0 package
  - IMapper
  - IAllocator
  - IMemory
- Add libhidlmemory
- Add default implementation of android.hidl.memory@1.0
  - Ashmem
  - Ion (TODO, probably in another CL)

Test: compiles (WIP)
Change-Id: I4632eeb6a0051551b54ce04d919aaf551dfc5f28
diff --git a/base/HidlSupport.cpp b/base/HidlSupport.cpp
index 35e1672..0103d14 100644
--- a/base/HidlSupport.cpp
+++ b/base/HidlSupport.cpp
@@ -13,10 +13,12 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#define LOG_TAG "HidlSupport"
 
 #include <hidl/HidlSupport.h>
 
 #include <android-base/logging.h>
+
 #ifdef LIBHIDL_TARGET_DEBUGGABLE
 #include <cutils/properties.h>
 #include <regex>