qdev: Use clz in print_size
We can compute a floor log2 value with clz rather than a division loop. Signed-off-by: NRichard Henderson <rth@twiddle.net> Message-id: 1375208443-17288-3-git-send-email-rth@twiddle.net Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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