x86/msr-index: Define INTEGRITY_CAPABILITIES MSR

The INTEGRITY_CAPABILITIES MSR is enumerated by bit 2 of the
CORE_CAPABILITIES MSR.

Add defines for the CORE_CAPS enumeration as well as for the integrity
MSR.

Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20220506225410.1652287-3-tony.luck@intel.com


Signed-off-by: Hans de Goede <hdegoede@redhat.com>