forked from Mirrors/opensbi

There was a naming incoherency between enabled events list lock/unlock. Rename sse_hart_unlock() to sse_enabled_event_unlock() to be coherent and reword comments above lock()/unlock() functions. Signed-off-by: Clément Léger <cleger@rivosinc.com> Reviewed-by: Anup Patel <anup@brainfault.org>