PCH: Add register descriptions used by IGD OpRegion

These bits are used by the IGD OpRegion code

Change-Id: I89a11fc5021d51e0c1675ba56f6a3bc3b79bb8aa
Signed-off-by: Stefan Reinauer <reinauer@google.com>
Reviewed-on: http://review.coreboot.org/1751
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marcj303@gmail.com>
diff --git a/src/southbridge/intel/bd82x6x/pch.h b/src/southbridge/intel/bd82x6x/pch.h
index c9044ed..8481554 100644
--- a/src/southbridge/intel/bd82x6x/pch.h
+++ b/src/southbridge/intel/bd82x6x/pch.h
@@ -472,6 +472,7 @@
 #define GPE0_EN		0x28
 #define   PME_B0_EN	(1 << 13)
 #define   PME_EN	(1 << 11)
+#define   TCOSCI_EN	(1 << 6)
 #define SMI_EN		0x30
 #define   INTEL_USB2_EN	 (1 << 18) // Intel-Specific USB2 SMI logic
 #define   LEGACY_USB2_EN (1 << 17) // Legacy USB2 SMI logic
@@ -494,6 +495,7 @@
 #define SS_CNT		0x50
 #define C3_RES		0x54
 #define TCO1_STS	0x64
+#define   DMISCI_STS	(1 << 9)
 #define TCO2_STS	0x66
 
 /*