drm_hwcomposer: Replace LOG_TAG with drmhwc

It's a pain to use logcat filters for drm_hwcomposer since each file has a different tag necessitating one to specify each tag for the logcat filter or use a regex.

Use one tag for all of drm_hwcomposer to simplify this.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
diff --git a/drm/DrmProperty.cpp b/drm/DrmProperty.cpp
index 938b3ad..031918a 100644
--- a/drm/DrmProperty.cpp
+++ b/drm/DrmProperty.cpp
@@ -15,7 +15,7 @@
  */
 
 // NOLINTNEXTLINE(cppcoreguidelines-macro-usage)
-#define LOG_TAG "hwc-drm-property"
+#define LOG_TAG "drmhwc"
 
 #include "DrmProperty.h"