Xe2 uses the same steering control register and steering semaphore
register as MTL.  As with recent platforms, group/instance 0,0 is
sufficient to target a non-terminated instance for most classes of MCR
registers; the only types of ranges that need to consider platform
fusing to find a non-terminated instance are SLICE/DSS ranges and a new
SQIDI_PSMI type of range.

Note that the range of valid bits in XE2_NODE_ENABLE_MASK may be reduced
for some Xe2 SKUs.  However the lowest bits are always valid and only
the lowest instance is obtained via __ffs(), so there's no need to
complicate the masking with extra platform/subplatform checks.

Also note that Wa_14017387313 suggests skipping MCR lock acquisition
around GAM and GAMWKR registers to prevent MCR register accesses in an
interrupt handler from deadlocking when the steering semaphore is
already held outside the interrupt context.  At this time Xe never
issues MCR accesses from within an interrupt handler so the workaround
is not currently needed.

v2:
  - [0x008700-0x0087FF] range to extend up to 0x887F (Matt Attwood)
  - [0x00EF00-0x00F4FF] -> [0x00F000, 0xFFFF] to follow latest
    bspec version (Bala)

Bspec: 71185
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
Reviewed-by: Balasubramani Vivekanandan <balasubramani.vivekanandan@intel.com>
Reviewed-by: Matt Atwood <matthew.s.atwood@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>