MISCREG_UNKNOWN is the MiscRegIdx of an invalid AArch64 system register. There is no need to define extra ids for AArch32 CP14/CP15 registers. We are therefore removing them in favour of MISCREG_UNKNOWN instead Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com> Change-Id: Ib41813dfcb6a9cad84b7cef9603bc530cf4b593d Reviewed-by: Richard Cooper <richard.cooper@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/56426 Maintainer: Andreas Sandberg <andreas.sandberg@arm.com> Tested-by: kokoro <noreply+kokoro@google.com>