sparc64: Use the cond_syscall()s in kernel/sys_ni.c instead of home-grown copy.

This also allows arch/sparc64/kernel/pci.c to be properly CONFIG_PCI
conditional compiled in the Makefile.
Signed-off-by: David S. Miller <davem@davemloft.net>

arch/sparc64/kernel/Makefile

@@ -10,13 +10,13 @@ extra-y		:= head.o init_task.o vmlinux.lds
 obj-y		:= process.o setup.o cpu.o idprom.o \
 		   traps.o auxio.o una_asm.o sysfs.o iommu.o \
 		   irq.o ptrace.o time.o sys_sparc.o signal.o \
-		   unaligned.o central.o pci.o starfire.o \
+		   unaligned.o central.o starfire.o \
 		   power.o sbus.o sparc64_ksyms.o \
 		   visemul.o prom.o of_device.o hvapi.o sstate.o mdesc.o
 
 obj-$(CONFIG_DYNAMIC_FTRACE) += ftrace.o
 obj-$(CONFIG_STACKTRACE) += stacktrace.o
-obj-$(CONFIG_PCI)	 += ebus.o pci_common.o \
+obj-$(CONFIG_PCI)	 += ebus.o pci.o pci_common.o \
 			    pci_psycho.o pci_sabre.o pci_schizo.o \
 			    pci_sun4v.o pci_sun4v_asm.o pci_fire.o
 obj-$(CONFIG_PCI_MSI)	+= pci_msi.o

arch/sparc64/kernel/pci.c

@@ -28,22 +28,6 @@
 
 #include "pci_impl.h"
 
-#ifndef CONFIG_PCI
-/* A "nop" PCI implementation. */
-asmlinkage int sys_pciconfig_read(unsigned long bus, unsigned long dfn,
-				  unsigned long off, unsigned long len,
-				  unsigned char *buf)
-{
-	return 0;
-}
-asmlinkage int sys_pciconfig_write(unsigned long bus, unsigned long dfn,
-				   unsigned long off, unsigned long len,
-				   unsigned char *buf)
-{
-	return 0;
-}
-#else
-
 /* List of all PCI controllers found in the system. */
 struct pci_pbm_info *pci_pbm_root = NULL;
 
@@ -1215,5 +1199,3 @@ void pci_resource_to_user(const struct pci_dev *pdev, int bar,
 	*start = rp->start - offset;
 	*end = rp->end - offset;
 }
-
-#endif /* !(CONFIG_PCI) */