arm64: sysreg: Fix and tidy up sysreg field definitions

Fix the value of ID_PFR1_EL1.Security NSACR_RFR to be 0b0010, as per
DDI0601/2025-06, which wasn't correctly set when introduced in commit
12243080 ("arm64/sysreg: Convert ID_PFR1_EL1 to automatic generation").

While at it, remove redundant definitions of CPACR_EL12 and
RCWSMASK_EL1 and fix some typos.

Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Marc Zyngier <maz@kernel.org>
Signed-off-by: Fuad Tabba <tabba@google.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Will Deacon <will@kernel.org>