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Define const_*() variants of the non-atomic bitops to be used when the input arguments are compile-time constants, so that the compiler will be always able to resolve those to compile-time constants as well. Those are mostly direct aliases for generic_*() with one exception for const_test_bit(): the original one is declared atomic-safe and thus doesn't discard the `volatile` qualifier, so in order to let optimize code, define it separately disregarding the qualifier. Add them to the compile-time type checks as well just in case. Suggested-by: Marco Elver <[email protected]> Signed-off-by: Alexander Lobakin <[email protected]> Reviewed-by: Marco Elver <[email protected]> Reviewed-by: Andy Shevchenko <[email protected]> Signed-off-by: Yury Norov <[email protected]>