stpaul_hw_rev_callback
"pciex", stpaul_hw_rev_callback);
"pci", stpaul_hw_rev_callback);
"network", stpaul_hw_rev_callback);
stpaul_hw_rev_callback);
err = stpaul_hw_rev_callback(nodeh, &nodeh);
int stpaul_hw_rev_callback(picl_nodehdl_t pcih, void *args);