northbridge/intel/x4x: clean up includes

- Don't redefine D0F0_PCIEXBAR_LO, use the #define in x4x.h
- Move TPMBASE and TPM32() definitions into iomap.h
- Use "" style include for x4x.h in nortbridge files.
- Move includes of .h files out of x4x.h and into the c files that need
them.
- Protect function definitions in bootblock.

Change-Id: I3fdb579235c5446733a0ffba05fffe1a73381251
Signed-off-by: Martin Roth <martinroth@google.com>
Reviewed-on: https://review.coreboot.org/12849
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/northbridge/intel/x4x/early_init.c b/src/northbridge/intel/x4x/early_init.c
index 1d43e0aca5..b98c42eb5d 100644
--- a/src/northbridge/intel/x4x/early_init.c
+++ b/src/northbridge/intel/x4x/early_init.c
@@ -16,6 +16,8 @@
 
 #include <stdint.h>
 #include <arch/io.h>
+#include "iomap.h"
+#include <southbridge/intel/i82801gx/i82801gx.h> /* DEFAULT_PMBASE */
 #include "x4x.h"
 
 void x4x_early_init(void)