SFI: Hook PCI MMCONFIG

First check ACPI, and if that fails, ask SFI to find the MCFG.

Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index d8ba424..4c92c91 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -1880,7 +1880,7 @@
 
 config PCI_MMCONFIG
 	def_bool y
-	depends on X86_32 && PCI && ACPI && (PCI_GOMMCONFIG || PCI_GOANY)
+	depends on X86_32 && PCI && (ACPI || SFI) && (PCI_GOMMCONFIG || PCI_GOANY)
 
 config PCI_OLPC
 	def_bool y