PC-BSD/trueos a6d07bbstand/i386/libfirewire firewire.c

MFC r342865: biospci_write_config args were backwards

biospci_write_config args swapped length and value to write. Some
hardware coped just fine, while other hardware had issues.

PR:             155441
DeltaFile
+3-3stand/i386/libfirewire/firewire.c
+3-31 files

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