amdgpu: add new CP firmware for polaris chips

Updated CP firmware for polaris chips.

Taken from internal git commit:
577de7b1c454cf5071d6c19d62580cc4af45bebf
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

WHENCE

@@ -1938,11 +1938,16 @@ File: amdgpu/stoney_sdma.bin
 File: amdgpu/stoney_uvd.bin
 File: amdgpu/stoney_vce.bin
 File: amdgpu/polaris10_ce.bin
+File: amdgpu/polaris10_ce_2.bin
 File: amdgpu/polaris10_mc.bin
 File: amdgpu/polaris10_me.bin
+File: amdgpu/polaris10_me_2.bin
 File: amdgpu/polaris10_mec2.bin
+File: amdgpu/polaris10_mec2_2.bin
 File: amdgpu/polaris10_mec.bin
+File: amdgpu/polaris10_mec_2.bin
 File: amdgpu/polaris10_pfp.bin
+File: amdgpu/polaris10_pfp_2.bin
 File: amdgpu/polaris10_rlc.bin
 File: amdgpu/polaris10_sdma1.bin
 File: amdgpu/polaris10_sdma.bin
@@ -1952,11 +1957,16 @@ File: amdgpu/polaris10_smc_sk.bin
 File: amdgpu/polaris10_uvd.bin
 File: amdgpu/polaris10_vce.bin
 File: amdgpu/polaris11_ce.bin
+File: amdgpu/polaris11_ce_2.bin
 File: amdgpu/polaris11_mc.bin
 File: amdgpu/polaris11_me.bin
+File: amdgpu/polaris11_me_2.bin
 File: amdgpu/polaris11_mec2.bin
+File: amdgpu/polaris11_mec2_2.bin
 File: amdgpu/polaris11_mec.bin
+File: amdgpu/polaris11_mec_2.bin
 File: amdgpu/polaris11_pfp.bin
+File: amdgpu/polaris11_pfp_2.bin
 File: amdgpu/polaris11_rlc.bin
 File: amdgpu/polaris11_sdma1.bin
 File: amdgpu/polaris11_sdma.bin
@@ -1966,11 +1976,16 @@ File: amdgpu/polaris11_smc_sk.bin
 File: amdgpu/polaris11_uvd.bin
 File: amdgpu/polaris11_vce.bin
 File: amdgpu/polaris12_ce.bin
+File: amdgpu/polaris12_ce_2.bin
 File: amdgpu/polaris12_mc.bin
 File: amdgpu/polaris12_me.bin
+File: amdgpu/polaris12_me_2.bin
 File: amdgpu/polaris12_mec.bin
+File: amdgpu/polaris12_mec_2.bin
 File: amdgpu/polaris12_mec2.bin
+File: amdgpu/polaris12_mec2_2.bin
 File: amdgpu/polaris12_pfp.bin
+File: amdgpu/polaris12_pfp_2.bin
 File: amdgpu/polaris12_rlc.bin
 File: amdgpu/polaris12_sdma.bin
 File: amdgpu/polaris12_sdma1.bin