libfc, libfcoe, fcoe: Convert debug_logging macros to pr_info

Convert libfc, libfcoe and fcoe's debug_logging macros
to use pr_info() instead of printk(KERN_INFO, ...). checkpatch.pl
now complains about this, so convert libfcoe to preferred
method.

Signed-off-by: Robert Love <robert.w.love@intel.com>
Tested-by: Marcus Dennis <marcusx.e.dennis@intel.com>