seq_printf() without format specifiers == faster seq_puts()

Link: http://lkml.kernel.org/r/20190114200545.GC9680@avx2Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>