amdgpu: add new raven rlc firmware

Needed for new raven variants.

From internel git commit:
a9f00864087575da562cd5cc50a04a0af376e14f
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Josh Boyer <jwboyer@kernel.org>

WHENCE

@@ -2248,6 +2248,7 @@ File: amdgpu/raven_rlc.bin
 File: amdgpu/raven_sdma.bin
 File: amdgpu/raven_vcn.bin
 File: amdgpu/raven_dmcu.bin
+File: amdgpu/raven_kicker_rlc.bin
 File: amdgpu/picasso_asd.bin
 File: amdgpu/picasso_ce.bin
 File: amdgpu/picasso_gpu_info.bin