Consolidate most ibm4xx initppc function into ibm4xx_init and Make all IBM4xx use it. Change explora to use initppc instead of bootstrap.
struct device * -> device_t struct cfdata * -> cfdata_t Use <sys/foo.h> instead of <machine/foo.h> if <sys/foo.h> exists Explicitly include <powerpc/ibm4xx/cpu.h> when needed.
