xtensa: provide xchg for sizes 1 and 2
This is required for generic queued spinlocks, implement it.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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74d69eaa
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This is required for generic queued spinlocks, implement it.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>