x86, mrst: Add vrtc platform data setup code

vRTC information is obtained from SFI tables on Moorestown, this patch parses
these tables and assign the information.

Signed-off-by: Feng Tang <feng.tang@intel.com>
LKML-Reference: <43F901BD926A4E43B106BF17856F07559FB80D0D@orsmsx508.amr.corp.intel.com>
Signed-off-by: Jacob Pan <jacob.jun.pan@intel.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
diff --git a/arch/x86/include/asm/mrst.h b/arch/x86/include/asm/mrst.h
index fa144f2..451d30e 100644
--- a/arch/x86/include/asm/mrst.h
+++ b/arch/x86/include/asm/mrst.h
@@ -11,7 +11,9 @@
 #ifndef _ASM_X86_MRST_H
 #define _ASM_X86_MRST_H
 extern int pci_mrst_init(void);
+int __init sfi_parse_mrtc(struct sfi_table_header *table);
 
 #define SFI_MTMR_MAX_NUM 8
+#define SFI_MRTC_MAX	8
 
 #endif /* _ASM_X86_MRST_H */