x86/resctrl: Introduce AMD QOS feature

Enable QOS feature on AMD.

Following QoS sub-features are supported on AMD if the underlying
hardware supports it:

 - L3 Cache allocation enforcement
 - L3 Cache occupancy monitoring
 - L3 Code-Data Prioritization support
 - Memory Bandwidth Enforcement (Allocation)

The specification is available at:
https://developer.amd.com/wp-content/resources/56375.pdf

There are differences in the way some of the features are implemented.
Separate those functions and add those as vendor specific functions.

The major difference is in MBA feature:

 - AMD uses CPUID leaf 0x80000020 to initialize the MBA features.
 - AMD uses direct bandwidth value instead of delay based on bandwidth values.
 - MSR register base addresses are different for MBA.
 - AMD allows non-contiguous L3 cache bit masks.

Signed-off-by: Babu Moger <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Arnd Bergmann <[email protected]>
Cc: Brijesh Singh <[email protected]>
Cc: "Chang S. Bae" <[email protected]>
Cc: David Miller <[email protected]>
Cc: David Woodhouse <[email protected]>
Cc: Dmitry Safonov <[email protected]>
Cc: Fenghua Yu <[email protected]>
Cc: Greg Kroah-Hartman <[email protected]>
Cc: "H. Peter Anvin" <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: Jann Horn <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Josh Poimboeuf <[email protected]>
Cc: Kate Stewart <[email protected]>
Cc: "Kirill A. Shutemov" <[email protected]>
Cc: <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Philippe Ombredanne <[email protected]>
Cc: Pu Wen <[email protected]>
Cc: <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Reinette Chatre <[email protected]>
Cc: Rian Hunter <[email protected]>
Cc: Sherry Hurwitz <[email protected]>
Cc: Suravee Suthikulpanit <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Cc: Thomas Lendacky <[email protected]>
Cc: Tony Luck <[email protected]>
Cc: Vitaly Kuznetsov <[email protected]>
Cc: <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]

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