[PATCH] fix drivers/pci/Makefile for PPC

On 32-bit PPC we don't need setup-bus.o but we do need setup-irq.o.
This patch changes drivers/pci/Makefile to reflect that.

drivers/pci/Makefile

@@ -29,7 +29,7 @@ obj-$(CONFIG_ALPHA) += setup-bus.o setup-irq.o
 obj-$(CONFIG_ARM) += setup-bus.o setup-irq.o
 obj-$(CONFIG_PARISC) += setup-bus.o
 obj-$(CONFIG_SUPERH) += setup-bus.o setup-irq.o
-obj-$(CONFIG_ALL_PPC) += setup-bus.o
+obj-$(CONFIG_PPC32) += setup-irq.o
 obj-$(CONFIG_DDB5476) += setup-bus.o
 obj-$(CONFIG_SGI_IP27) += setup-irq.o