x86/microcode/AMD: Fix Entrysign revision check for Zen5/Strix Halo

x86/microcode/AMD: Fix Entrysign revision check for Zen5/Strix Halo

commit 150b1b97e27513535dcd3795d5ecd28e61b6cb8c upstream.

Zen5 also contains family 1Ah, models 70h-7Fh, which are mistakenly missing
from cpu_has_entrysign(). Add the missing range.

Fixes: 8a9fb5129e8e ("x86/microcode/AMD: Limit Entrysign signature checking to known generations")
Signed-off-by: Rong Zhang <i@rong.moe>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Cc: stable@kernel.org
Link: https://patch.msgid.link/20251229182245.152747-1-i@rong.moe
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>