drm/i915/icl: Correctly initialize the Gen11 engines

drm/i915/icl: Correctly initialize the Gen11 engines

Gen11 has up to 4 VCS and up to 2 VECS engines, this patch adds mmio
base definitions for all of them.

Bspec: 20944
Bspec: 7021

v2: Set the correct mmio_base in intel_engines_init_mmio; updating the
base mmio values any later would cause incorrect reads in
i915_gem_sanitize (Michel).

Cc: Tvrtko Ursulin <[email protected]>
Cc: Ceraolo Spurio, Daniele <[email protected]>
Signed-off-by: Oscar Mateo <[email protected]>
Signed-off-by: Michel Thierry <[email protected]>
Reviewed-by: Daniele Ceraolo Spurio <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
Signed-off-by: Mika Kuoppala <[email protected]>