Revised ADB icon that looks less like wifi.

It also looks a little less like the platlogo flight patch.
On the plus side, it looks a little more like ice cream.

Fixes: 336476251
Bug: 320695719
Test: atest core/tests/coretests/src/android/graphics/drawable/IconTest.java
Flag: none
Change-Id: Iad7a1b8afbf158b3109fe122bfd8a9b352a95a86