x86: Export the symbol ms_hyperv

This is needed so that the staging hyperv can properly access this
symbol.

Signed-off-by: K. Y. Srinivasan <ksrinivasan@novell.com>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
diff --git a/arch/x86/kernel/cpu/mshyperv.c b/arch/x86/kernel/cpu/mshyperv.c
index 16f41bb..d944bf6 100644
--- a/arch/x86/kernel/cpu/mshyperv.c
+++ b/arch/x86/kernel/cpu/mshyperv.c
@@ -18,6 +18,7 @@
 #include <asm/mshyperv.h>
 
 struct ms_hyperv_info ms_hyperv;
+EXPORT_SYMBOL_GPL(ms_hyperv);
 
 static bool __init ms_hyperv_platform(void)
 {