arm64/sysreg: Fix unbalanced closing block

arm64/sysreg: Fix unbalanced closing block

This is a sysreg block so close it with one. This doesn't make a
difference to the output because the script only matches on the
beginning of the word to close blocks which is correct by coincidence
here.

Signed-off-by: James Clark <james.clark@linaro.org>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/20250115162600.2153226-2-james.clark@linaro.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>