riscv: mm: init: mark satp_mode __ro_after_init

satp_mode is never modified after init, so it can be marked as
__ro_after_init.

Signed-off-by: Jisheng Zhang <jszhang@kernel.org>
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
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Jisheng Zhang 2022-01-26 00:00:12 +08:00 • committed by Palmer Dabbelt
commit 67ff2f2626
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