KVM: Add __KERNEL__ guards to exported headers

Signed-off-by: Avi Kivity <avi@redhat.com>

arch/ia64/include/asm/kvm_para.h

@@ -19,9 +19,13 @@
  *
  */
 
+#ifdef __KERNEL__
+
 static inline unsigned int kvm_arch_para_features(void)
 {
 	return 0;
 }
 
 #endif
+
+#endif