iommu/arm-smmu: Add implementation specific device group matching

Certain SMMU implementations depend on implementation specific
settings to ensure that translations for a group of SMMU masters
work properly, so add a function to determine if a master belongs
in a particular IOMMU group based on implementation defined
settings.

Also, wire up the QSMMUV500 implementation of this hook, leaving
the arm_smmu_arch_ops structure completely unused. Since it has
been superseded by the implementation framework, remove the
remaining support for it.

Change-Id: I53b1b014be187757c6e48e57f23cc9732103f890
Signed-off-by: Isaac J. Manjarres <isaacm@codeaurora.org>