arm64/sysreg: Add register fields for ID_AA64DFR1_EL1

arm64/sysreg: Add register fields for ID_AA64DFR1_EL1

This adds register fields for ID_AA64DFR1_EL1 as per the definitions based
on DDI0601 2023-12.

Cc: Will Deacon <will@kernel.org>
Cc: Mark Brown <broonie@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20240220023203.3091229-1-anshuman.khandual@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>