spinlock: extend guard with spinlock_bh variants
Extend guard APIs with missing raw/spinlock_bh variants.
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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