[POWERPC] cell: fix building without spufs

It may be desireable to build a kernel for cell without
spufs, e.g. as the initial kboot kernel. This requires
that the SPU specific parts of the core dump and the xmon
code depend on CONFIG_SPU_BASE instead of CONFIG_PPC_CELL.

Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
diff --git a/arch/powerpc/xmon/Makefile b/arch/powerpc/xmon/Makefile
index 6930357..51d9758 100644
--- a/arch/powerpc/xmon/Makefile
+++ b/arch/powerpc/xmon/Makefile
@@ -8,5 +8,5 @@
 
 ifdef CONFIG_XMON_DISASSEMBLY
 obj-y			+= ppc-dis.o ppc-opc.o
-obj-$(CONFIG_PPC_CELL)	+= spu-dis.o spu-opc.o
+obj-$(CONFIG_SPU_BASE)	+= spu-dis.o spu-opc.o
 endif