display: Enhance debug logging

1) Enable dynamic debugging in DRM
2) Add more Qservice debug categories, add corresponding kTags
3) Use ALOG for messages before core creation and after it is destroyed
4) Categorize existing logs correctly
5) Add more logs

Change-Id: I3a9907900c6546adca907ecf720a78649fdc800b
Crs-fixed: 2146757
17 files changed