Add Southbridge support for S3.

1. Add some CIMX call for S3.
2. Detect sleep type.

Change-Id: I62888e8d8a03987ca88f5c935fa660f6b49a4fe9
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: zbao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/621
Tested-by: build bot (Jenkins)
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
diff --git a/src/southbridge/amd/cimx/sb800/sb_cimx.h b/src/southbridge/amd/cimx/sb800/sb_cimx.h
index 42a7ba9..5e510de 100644
--- a/src/southbridge/amd/cimx/sb800/sb_cimx.h
+++ b/src/southbridge/amd/cimx/sb800/sb_cimx.h
@@ -29,6 +29,10 @@
 void sb_After_Pci_Init(void);
 void sb_Mid_Post_Init(void);
 void sb_Late_Post(void);
+void sb_Before_Pci_Restore_Init(void);
+void sb_After_Pci_Restore_Init(void);
+
+int acpi_is_wakeup_early(void);
 
 /**
  * CIMX not set the clock to 48Mhz until sbBeforePciInit,