arm64/sme: Automatically generate SMIDR_EL1 defines

Automatically generate the defines for SMIDR_EL1, no functional change.

Signed-off-by: Mark Brown <broonie@kernel.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Link: https://lore.kernel.org/r/20220510161208.631259-9-broonie@kernel.org


Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>