Description: x86/srso: Add SRSO mitigation for Hygon processors
References:
Notes:
 carnil> First introducing commit could not be determined.
Bugs:
upstream: released (6.6-rc4) [a5ef7d68cea1344cf524f04981c2b3f80bedbb0d]
6.8-upstream-stable: N/A "Fixed before branching point"
6.7-upstream-stable: N/A "Fixed before branching point"
6.6-upstream-stable: N/A "Fixed before branching point"
6.1-upstream-stable: released (6.1.56) [6ce2f297a7168274547d0b5aea6c7c16268b8a96]
5.10-upstream-stable: released (5.10.215) [e7ea043bc3f19473561c08565047b3f1671bf35d]
4.19-upstream-stable: needed
sid: released (6.5.6-1)
6.1-bookworm-security: released (6.1.64-1)
5.10-bullseye-security: needed
4.19-buster-security: needed