nb/intel/sandybridge: Use common {DMI,EP,MCH}BAR accessors

Drop unused sandybridge.h includes to avoid build failures on Ironlake.

Tested with BUILD_TIMELESS=1, Asus P8Z77-V LX2 remains identical.

Change-Id: If2f0147fe50266e2fe2098cafdf004e51282f5e2
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/49752
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>
diff --git a/src/northbridge/intel/sandybridge/Kconfig b/src/northbridge/intel/sandybridge/Kconfig
index 16cd697..215560f 100644
--- a/src/northbridge/intel/sandybridge/Kconfig
+++ b/src/northbridge/intel/sandybridge/Kconfig
@@ -154,4 +154,13 @@
 config INTEL_GMA_BCLV_OFFSET
 	default 0x48254
 
+config FIXED_MCHBAR_MMIO_BASE
+	default 0xfed10000
+
+config FIXED_DMIBAR_MMIO_BASE
+	default 0xfed18000
+
+config FIXED_EPBAR_MMIO_BASE
+	default 0xfed19000
+
 endif