pci_ops_mmconf: Move conditional compilation to Makefile

Moved the conditional compilation out of the source file

Change-Id: Ic4045006f39d70f4a0bc37d1bd5e073ed8477c68
Signed-off-by: Vikram Narayanan <vikram186@gmail.com>
Reviewed-on: http://review.coreboot.org/578
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

src/arch/x86/lib/Makefile.inc

@@ -2,7 +2,9 @@ ramstage-y += c_start.S
 ramstage-y += cpu.c
 ramstage-y += pci_ops_conf1.c
 ramstage-y += pci_ops_conf2.c
-ramstage-y += pci_ops_mmconf.c
+
+ramstage-$(CONFIG_MMCONF_SUPPORT) += pci_ops_mmconf.c
+
 ramstage-y += pci_ops_auto.c
 ramstage-y += exception.c
 ramstage-$(CONFIG_IOAPIC) += ioapic.c

src/arch/x86/lib/pci_ops_mmconf.c

@@ -1,5 +1,3 @@
-#if CONFIG_MMCONF_SUPPORT
-
 #include <console/console.h>
 #include <arch/io.h>
 #include <arch/pciconf.h>
@@ -63,5 +61,3 @@ const struct pci_bus_operations pci_ops_mmconf = {
 	.write16 = pci_mmconf_write_config16,
 	.write32 = pci_mmconf_write_config32,
 };
-
-#endif