powerpc: Move swsusp.S over to arch/powerpc

... and rename it to swsusp_32.S, since it's 32-bit only at this stage.
Signed-off-by: Paul Mackerras <paulus@samba.org>

arch/ppc/kernel/Makefile

@@ -13,7 +13,6 @@ extra-y				+= vmlinux.lds
 obj-y				:= entry.o traps.o time.o misc.o \
 					setup.o \
 					ppc_htab.o
-obj-$(CONFIG_SOFTWARE_SUSPEND)	+= swsusp.o
 obj-$(CONFIG_MODULES)		+= module.o ppc_ksyms.o
 obj-$(CONFIG_NOT_COHERENT_CACHE)	+= dma-mapping.o
 obj-$(CONFIG_PCI)		+= pci.o
@@ -32,7 +31,6 @@ endif
 # These are here while we do the architecture merge
 
 else
-obj-$(CONFIG_SOFTWARE_SUSPEND)	+= swsusp.o
 obj-$(CONFIG_MODULES)		+= module.o
 obj-$(CONFIG_NOT_COHERENT_CACHE)	+= dma-mapping.o
 obj-$(CONFIG_KGDB)		+= ppc-stub.o