libfc: Micro-optimize fc_setup_exch_mgr()
Convert a loop into an ilog2() call. Although this code is not performance sensitive this conversion makes this code easier to read. Signed-off-by: NBart Van Assche <bvanassche@acm.org> Cc: Neil Horman <nhorman@tuxdriver.com> Signed-off-by: NRobert Love <robert.w.love@intel.com>
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