WHENCE: Fix metadata for snd-soc-skl firmware

Fix filename 'intel/dsp_fw_bxtn.bin'.  List all the files and their
versions, not just the symlinks.  Delete the non-standard 'md5sum'
fields.
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
Acked-by: Vinod Koul <vinod.koul@intel.com>

WHENCE

@@ -3041,21 +3041,39 @@ License: Redistributable. See LICENCE.fw_sst_0f28 for details
 
 Driver: snd-soc-skl
 
-File: intel/dsp_fw_release.bin
+File: intel/dsp_fw_release_v827.bin
+Version: 8.20.00.927
+File: intel/dsp_fw_release_v869.bin
+Version; 8.20.00.869
+File: intel/dsp_fw_release_v896.bin
+Version: 8.20.00.896
+File: intel/dsp_fw_release_v927.bin
+Version: 8.20.00.927
+File: intel/dsp_fw_release_v948.bin
+Version: 8.20.00.948
+File: intel/dsp_fw_release_v951.bin
+Version: 8.20.00.951
+File: intel/dsp_fw_release_v958.bin
 Version: 8.20.00.958
-md5sum: 02bd300f5ef85ae04afffd7c0ef50c46
+Link: intel/dsp_fw_release.bin -> dsp_fw_release_v958.bin
 
 License: Redistributable. See LICENCE.adsp_sst for details
 
-File: intel/dsp_fw_bxt.bin
+File: intel/dsp_fw_bxtn_v430.bin
+Version: 9.00.00.430
+File: intel/dsp_fw_bxtn_v702.bin
+Version: 9.00.00.702
+File: intel/dsp_fw_bxtn_v1118.bin
 Version: 9.22.00.1118
-md5sum: 469dfcf5b2ebbc58505a0cca23303723
+Link: intel/dsp_fw_bxtn.bin -> dsp_fw_bxtn_v1118.bin
 
 License: Redistributable. See LICENCE.adsp_sst for details
 
-File: intel/dsp_fw_kbl.bin
+File: intel/dsp_fw_kbl_v701.bin
+Version: 9.21.00.701
+File: intel/dsp_fw_kbl_v1037.bin
 Version: 09.21.00.1037
-md5sum: e71a2421565fadae228b3924d9510bcb
+Link: intel/dsp_fw_kbl.bin -> dsp_fw_kbl_v1037.bin
 
 License: Redistributable. See LICENCE.adsp_sst for details