Fix log tag for sensors VTS tests

Define log tag at build level to ensure all libraries have a tag
defined.

Bug: 135638664
Test: run VtsHalSensorsV2_0TargetTest
Change-Id: I593055b59238e9fa8dead00a3dafa84c00e90ec4
diff --git a/sensors/common/vts/utils/Android.bp b/sensors/common/vts/utils/Android.bp
index 95df425..8da554a 100644
--- a/sensors/common/vts/utils/Android.bp
+++ b/sensors/common/vts/utils/Android.bp
@@ -16,6 +16,7 @@
 
 cc_library_static {
     name: "VtsHalSensorsTargetTestUtils",
+    cflags: ["-DLOG_TAG=\"sensors_hidl_hal_test\""],
     srcs: [
         "GrallocWrapper.cpp",
         "SensorsHidlEnvironmentBase.cpp",
diff --git a/sensors/common/vts/utils/GrallocWrapper.cpp b/sensors/common/vts/utils/GrallocWrapper.cpp
index 7bed16d..153c208 100644
--- a/sensors/common/vts/utils/GrallocWrapper.cpp
+++ b/sensors/common/vts/utils/GrallocWrapper.cpp
@@ -14,8 +14,6 @@
  * limitations under the License.
  */
 
-#define LOG_TAG "GrallocWrapper"
-
 #include "GrallocWrapper.h"
 
 #include <utils/Log.h>