Add bd82x6x PCH functions to SMM

Add the PCH function to SMM for follow-on SMM patches that
require these functions.

Change-Id: I7f3a512c5e98446e835b59934d63a99e8af15280
Signed-off-by: Marc Jones <marc.jones@se-eng.com>
Reviewed-on: http://review.coreboot.org/2758
Tested-by: build bot (Jenkins)
Reviewed-by: Ronald G. Minnich <rminnich@gmail.com>
diff --git a/src/southbridge/intel/bd82x6x/pch.h b/src/southbridge/intel/bd82x6x/pch.h
index ca54418..7f64571 100644
--- a/src/southbridge/intel/bd82x6x/pch.h
+++ b/src/southbridge/intel/bd82x6x/pch.h
@@ -57,17 +57,19 @@
 #endif
 
 #if !defined(__ASSEMBLER__) && !defined(__ROMCC__)
-#if !defined(__PRE_RAM__) && !defined(__SMM__)
+#if !defined(__PRE_RAM__)
+#if !defined(__SMM__)
 #include "chip.h"
+void pch_enable(device_t dev);
+#endif
 int pch_silicon_revision(void);
 int pch_silicon_type(void);
 int pch_silicon_supported(int type, int rev);
-void pch_enable(device_t dev);
 void pch_iobp_update(u32 address, u32 andvalue, u32 orvalue);
 #if CONFIG_ELOG
 void pch_log_state(void);
 #endif
-#else
+#else /* __PRE_RAM__ */
 void enable_smbus(void);
 void enable_usb_bar(void);
 int smbus_read_byte(unsigned device, unsigned address);