Revert "Upgrade kernel to 4.19 gki and uploaded gki modules"

This reverts commit 3cde85f0cfcb2b019ee77bc46224894807dd598b.

Reason for revert: Breaks gfx ci test (b/141504808)

Change-Id: Icf10a7fccd81df07fb8888e4f4bfb9b8793c6bae
Bug: 141504808
51 files changed