AOD: More VisD updates

- Change alpha for clock on AOD2
- Increase header bottom margin on ambient notification

Fixes: 37089014
Bug: 30876804
Test: visual inspection
Change-Id: If7ba1a51fdce3167129e8d8845bcb4a09b22a78d
(cherry picked from commit 0bcaa27ceb1a0e3e32b7ce194d41d32637d1d5a6)
2 files changed