s390/string: use generic strrchr
Use generic strrchr instead of an optimized architecture specific variant. Performance of strrchr is not relevant for real life workloads, since the only user which may call this more frequently would be kbasename(). Suggested-by: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lore.kernel.org/lkml/CAHk-=whoe211F8ND-9hZvfnib0UA4gga8DZJ+YaBZNbE4fubdg@mail.gmail.com/ Signed-off-by: Heiko Carstens <hca@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
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