sys: Remove $FreeBSD$: one-line .c patternRemove /^[\s*]*__FBSDID\("\$FreeBSD\$"\);?\s*\n/
alpm: Remove unused devclass argument to DRIVER_MODULE.
Remove unused smbus_devclass.
alpm: clean up empty lines in .c and .h files
sys/dev: minor spelling fixes.Most affect comments, very few have user-visible effects.
Move all the power management (SMBus) drivers to their own directory,away from sys/pci.