perl -pi -0777 -e 's/_disable\s*\(\s*struct dev \*dev\s*\)\s*{\s*struct nic \*nic.*?$/_disable ( struct nic *nic ) {/ms' *.c

perl -pi -0777 -e 's/_disable\s*\(\s*struct dev \*dev(\s*__unused)?\)\s*{/_disable ( struct nic *nic$1 ) {/ms' *.c

perl -pi -0777 -e 's/_probe\s*\(\s*struct dev \*dev,\s*struct pci_device \*(\w+?)\s*\)\s*{(\s*)struct nic \*nic.*?$/_probe ( struct dev *dev ) {\n${2}struct nic *nic = nic_device ( dev );\n${2}struct pci_device *$1 = pci_device ( dev );/ms' *.c

perl -pi -0777 -e 's/static struct pci_driver (\w+) __pci_driver = {.*\.name\s*=\s*(\"\S+\").*\.probe\s*=\s*(\w+).*\.ids\s*=\s*(\w+).*\.class\s*=\s*(\w+).*?};/static struct pci_driver $1 =\n\tPCI_DRIVER ( $2, $4, $5 );\n\nBOOT_DRIVER ( $2, $3 );/ms' *.c

perl -pi -e 's/(PCI_DRIVER \(.*, )0 \);/${1}PCI_NO_CLASS );/' *.c

should, with the new build system, just be a case of writing the .c file
and dropping it in place in drivers/net.  :)