sh: Split out arch/sh/kernel/process.c for _32 and _64 variants.

extra-y	:= head.o init_task.o vmlinux.lds

obj-y	:= debugtraps.o io.o io_generic.o irq.o machvec.o process.o ptrace.o \

	   semaphore.o setup.o signal.o sys_sh.o syscalls.o \

obj-y	:= debugtraps.o io.o io_generic.o irq.o machvec.o process_32.o \

	   ptrace.o semaphore.o setup.o signal.o sys_sh.o syscalls.o \

	   time.o topology.o traps.o

obj-y				+= cpu/ timers/