fix build bug in "x86: add PCI extended config space access for AMD Barcelona"

Also much less code now.

Signed-off-by: Robert Richter <robert.richter@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index d8f1712..20e14db 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -136,6 +136,7 @@
 	setup_cpumask_of_cpu();
 }
 
+#endif
 #define ENABLE_CF8_EXT_CFG      (1ULL << 46)
 
 void __cpuinit amd_enable_pci_ext_cfg(struct cpuinfo_x86 *c)
@@ -149,4 +150,3 @@
 	set_cpu_cap(c, X86_FEATURE_PCI_EXT_CFG);
 }
 
-#endif