KVM: arm64: Unify HDFG[WR]TR_GROUP FGT identifiers

There is no reason to have separate FGT group identifiers for
the debug fine grain trapping. The sole requirement is to provide
the *names* so that the SR_FGF() macro can do its magic of picking
the correct bit definition.

So let's alias HDFGWTR_GROUP and HDFGRTR_GROUP.

Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20240214131827.2856277-9-maz@kernel.org


Signed-off-by: Oliver Upton <oliver.upton@linux.dev>