s390/jump_label: Use %*ph to print small buffers
printk() supports %*ph format specifier for printing a small buffers, let's use it intead of %02x %02x... Signed-off-by: NAlexander Kuleshov <kuleshovmail@gmail.com> Signed-off-by: NMartin Schwidefsky <schwidefsky@de.ibm.com>
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