arm64/sysreg: Convert HFG[RW]TR_EL2 to automatic generation

Convert the fine grained traps read and write control registers to
automatic generation as per DDI0601 2022-12. No functional changes.

Reviewed-by: Joey Gouly <joey.gouly@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230306-arm64-fgt-reg-gen-v3-1-decba93cbaab@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>