amdgpu: add smc firmware for new polaris variants

from internal git commit:
35328ab989a24fa32069bdbbea55f5cbcbdbcec6
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Kyle McMartin <kyle@kernel.org>

WHENCE

@@ -1916,6 +1916,7 @@ File: amdgpu/polaris10_rlc.bin
 File: amdgpu/polaris10_sdma1.bin
 File: amdgpu/polaris10_sdma.bin
 File: amdgpu/polaris10_smc.bin
+File: amdgpu/polaris10_k_smc.bin
 File: amdgpu/polaris10_smc_sk.bin
 File: amdgpu/polaris10_uvd.bin
 File: amdgpu/polaris10_vce.bin
@@ -1929,6 +1930,7 @@ File: amdgpu/polaris11_rlc.bin
 File: amdgpu/polaris11_sdma1.bin
 File: amdgpu/polaris11_sdma.bin
 File: amdgpu/polaris11_smc.bin
+File: amdgpu/polaris11_k_smc.bin
 File: amdgpu/polaris11_smc_sk.bin
 File: amdgpu/polaris11_uvd.bin
 File: amdgpu/polaris11_vce.bin