powerpc: Use arch/powerpc/mm and arch/powerpc/lib for 64-bit

This also puts a copy of indirect_pci.c in arch/powerpc/sysdev
so that we don't need to build in arch/ppc/syslib.

Signed-off-by: Paul Mackerras <paulus@samba.org>
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 0648640..a4c605f 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -124,15 +124,12 @@
 head-$(CONFIG_PPC_FPU)		+= arch/powerpc/kernel/fpu.o
 endif
 
-core-y				+= arch/powerpc/kernel/
-core-y				+= arch/$(OLDARCH)/kernel/
-core-$(CONFIG_PPC32)		+= arch/powerpc/mm/
-core-$(CONFIG_PPC64)		+= arch/$(OLDARCH)/mm/
-core-$(CONFIG_PPC32)		+= arch/powerpc/lib/
-libs-$(CONFIG_PPC64)		+= arch/$(OLDARCH)/lib/
-core-y				+= arch/powerpc/sysdev/
-core-y				+= arch/powerpc/platforms/
-core-$(CONFIG_PPC32)		+= arch/ppc/syslib/
+core-y				+= arch/powerpc/kernel/ \
+				   arch/$(OLDARCH)/kernel/ \
+				   arch/powerpc/mm/ \
+				   arch/powerpc/lib/ \
+				   arch/powerpc/sysdev/ \
+				   arch/powerpc/platforms/
 core-$(CONFIG_MATH_EMULATION)	+= arch/ppc/math-emu/
 core-$(CONFIG_XMON)		+= arch/powerpc/xmon/
 core-$(CONFIG_APUS)		+= arch/ppc/amiga/