Add definitions of PIR_EL1, PIR_EL12, PIRE0_EL1, PIRE0_EL12, and PIR_EL2 registers. Signed-off-by: Joey Gouly <joey.gouly@arm.com> Cc: Will Deacon <will@kernel.org> Cc: Mark Brown <broonie@kernel.org> Reviewed-by: Mark Brown <broonie@kernel.org> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Link: https://lore.kernel.org/r/20230606145859.697944-5-joey.gouly@arm.com Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>