sb,soc/intel: Apply transitional flag TCO_SPACE_NOT_YET_SPLIT

Tree is inconsistent with the use of TCO register space offsets and
related preprocessor defines. The legacy space was offset from ACPI
PM base by 0x60, but this changed with later platforms. The convenient
way is to define the TCO registers relative to its base address and
subtract 0x60 here, but this change cannot be easily done tree-wide or
in one go.

For the transient period, apply TCO_SPACE_NOT_YET_SPLIT flag until
all platforms use a clean style of tco_{read,write} accessor functions
instead of {read,write}_pmbase16(), or worse, inw/outl().

Change-Id: I16213cdb13f98fccb261004b31e81a9a44cb6e3b
Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70043
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
diff --git a/src/southbridge/intel/lynxpoint/pch.h b/src/southbridge/intel/lynxpoint/pch.h
index dcd3ce5..0d8be7b 100644
--- a/src/southbridge/intel/lynxpoint/pch.h
+++ b/src/southbridge/intel/lynxpoint/pch.h
@@ -619,10 +619,13 @@
 #define PM2_CNT		0x50 // mobile only
 #define C3_RES		0x54
 
+#if CONFIG(TCO_SPACE_NOT_YET_SPLIT)
 #define TCO1_STS	0x64
 #define   DMISCI_STS	(1 << 9)
 #define TCO2_STS	0x66
 #define   SECOND_TO_STS	(1 << 1)
+#endif
+
 #define ALT_GP_SMI_EN2	0x5c
 #define ALT_GP_SMI_STS2	0x5e