s390/bitops: add for_each_set_bit_inv helper
BugLink: http://bugs.launchpad.net/bugs/1744736 Same helper function like for_each_set_bit in generic code. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> (cherry picked from commit 09214545) Signed-off-by: Joseph Salisbury <joseph.salisbury@canonical.com> Acked-by: Khalid Elmously <khalid.elmously@canonical.com> Acked-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com> Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>
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