hw/arm/smmu: Split smmuv3_translate()

smmuv3_translate() does everything from STE/CD parsing to TLB lookup
and PTW.

Soon, when nesting is supported, stage-1 data (tt, CD) needs to be
translated using stage-2.

Split smmuv3_translate() to 3 functions:

- smmu_translate(): in smmu-common.c, which does the TLB lookup, PTW,
  TLB insertion, all the functions are already there, this just puts
  them together.
  This also simplifies the code as it consolidates event generation
  in case of TLB lookup permission failure or in TT selection.

- smmuv3_do_translate(): in smmuv3.c, Calls smmu_translate() and does
  the event population in case of errors.

- smmuv3_translate(), now calls smmuv3_do_translate() for
  translation while the rest is the same.

Also, add stage in trace_smmuv3_translate_success()

Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Mostafa Saleh <smostafa@google.com>
Reviewed-by: Jean-Philippe Brucker <jean-philippe@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20240715084519.1189624-6-smostafa@google.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

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