amdgpu: add new navi14 wks gfx firmware for 19.30

From internal commit:
06711211fd09b04ac7813067acc0e13a3753bbab

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

WHENCE

@@ -2288,11 +2288,16 @@ File: amdgpu/navi10_sos.bin
 File: amdgpu/navi10_vcn.bin
 File: amdgpu/navi14_asd.bin
 File: amdgpu/navi14_ce.bin
+File: amdgpu/navi14_ce_wks.bin
 File: amdgpu/navi14_gpu_info.bin
 File: amdgpu/navi14_me.bin
+File: amdgpu/navi14_me_wks.bin
 File: amdgpu/navi14_mec.bin
+File: amdgpu/navi14_mec_wks.bin
 File: amdgpu/navi14_mec2.bin
+File: amdgpu/navi14_mec2_wks.bin
 File: amdgpu/navi14_pfp.bin
+File: amdgpu/navi14_pfp_wks.bin
 File: amdgpu/navi14_rlc.bin
 File: amdgpu/navi14_sdma.bin
 File: amdgpu/navi14_sdma1.bin