x86: fix spurious '#' in kvm header

Signed-off-by: Vegard Nossum <vegard.nossum@gmail.com>

include/asm-x86/kvm_host.h

@@ -1,4 +1,4 @@
-#/*
+/*
  * Kernel-based Virtual Machine driver for Linux
  *
  * This header defines architecture specific interfaces, x86 version