x86: Export FPU API for KVM use

Also add some constants.

Signed-off-by: Sheng Yang <sheng@linux.intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c
index e7e3521..ebcfcce 100644
--- a/arch/x86/kernel/process.c
+++ b/arch/x86/kernel/process.c
@@ -28,6 +28,7 @@
 EXPORT_SYMBOL(idle_nomwait);
 
 struct kmem_cache *task_xstate_cachep;
+EXPORT_SYMBOL_GPL(task_xstate_cachep);
 
 int arch_dup_task_struct(struct task_struct *dst, struct task_struct *src)
 {