x86/cpu: Add Tremont to the cpu vulnerability whitelist

x86/cpu: Add Tremont to the cpu vulnerability whitelist

Add the new cpu family ATOM_TREMONT_D to the cpu vunerability
whitelist. ATOM_TREMONT_D is not affected by X86_BUG_ITLB_MULTIHIT.

ATOM_TREMONT_D might have mitigations against other issues as well, but
only the ITLB multihit mitigation is confirmed at this point.

Signed-off-by: Pawan Gupta <pawan.kumar.gupta@linux.intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
[Salvatore Bonaccorso: Backport to 5.3.7: Rename ATOM_TREMONT_D back to
ATOM_TREMONT_X as the stable series do not contain 5ebb34edbefa ("x86/intel:
Aggregate microserver naming") which uniforms the name for big and small
microservers]

Gbp-Pq: Topic bugfix/x86/itlb_multihit
Gbp-Pq: Name 0002-x86-cpu-Add-Tremont-to-the-cpu-vulnerability-whiteli.patch