amdgpu: add gfx ras inject configuration file

This configuration file will be picked up when
running gfx ras inject tests by amdgpu_test tool.
For the time being, only add those tests that are
successfully trafficked. In addition, this file
can also be modified by user to add or delete ras
inject unit tests for different IP blocks/subblocks.

Signed-off-by: Dennis Li <dennis.li@amd.com>
Signed-off-by: Guchun Chen <guchun.chen@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Tao Zhou <tao.zhou1@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>