nb/intel/haswell: Set up Root Complex topology

System BIOS must program some of the Root Complex Topology Capability
Structure registers located in configuration space, specs say. So do it.

Tested on Asrock B85M Pro4, still boots.

Change-Id: Ia2a61706a127bf2b817004a8ec6a723da9826aad
Signed-off-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/43744
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
diff --git a/src/northbridge/intel/haswell/registers/epbar.h b/src/northbridge/intel/haswell/registers/epbar.h
index 963cead..699a2ba 100644
--- a/src/northbridge/intel/haswell/registers/epbar.h
+++ b/src/northbridge/intel/haswell/registers/epbar.h
@@ -20,5 +20,9 @@
 #define EPLE1A		0x058	/* 64bit */
 #define EPLE2D		0x060	/* 32bit */
 #define EPLE2A		0x068	/* 64bit */
+#define EPLE3D		0x070	/* 32bit */
+#define EPLE3A		0x078	/* 64bit */
+#define EPLE4D		0x080	/* 32bit */
+#define EPLE4A		0x088	/* 64bit */
 
 #endif /* __HASWELL_REGISTERS_EPBAR_H__ */