linux-firmware: Update AMD SEV firmware

Update AMD SEV firmware to version 0.17 build 30 for AMD family 17h
processors with models in the range 00h to 0fh.

Add SEV firmware version 0.24 build 4 for AMD family 17h processors in
the range 30h to 3fh.
Signed-off-by: John Allen <john.allen@amd.com>
[Added updated WHENCE information]
Signed-off-by: Josh Boyer <jwboyer@kernel.org>

WHENCE

@@ -3583,7 +3583,9 @@ Licence: Redistributable. See LICENCE.go7007 for details
 Driver: ccp - Platform Security Processor (PSP) device
 
 File: amd/amd_sev_fam17h_model0xh.sbin
-Version: 2019-02-13
+Version: 2020-07-21
+File: amd/amd_sev_fam17h_model3xh.sbin
+Version: 2020-07-21
 
 License: Redistributable. See LICENSE.amd-sev for details