x86: unify tss_struct

Although slighly different, the tss_struct is very similar in x86_64 and
i386. The really different part, which matchs the hardware vision of it, is
now called x86_hw_tss, and each of the architectures provides yours.
It's then used as a field in the outter tss_struct.

Signed-off-by: Glauber de Oliveira Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/include/asm-x86/lguest.h b/include/asm-x86/lguest.h
index 3585a16..1c8367a 100644
--- a/include/asm-x86/lguest.h
+++ b/include/asm-x86/lguest.h
@@ -51,7 +51,7 @@
 	/* Fields which are used when guest is running. */
 	struct desc_ptr guest_idt_desc;
 	struct desc_ptr guest_gdt_desc;
-	struct i386_hw_tss guest_tss;
+	struct x86_hw_tss guest_tss;
 	struct desc_struct guest_idt[IDT_ENTRIES];
 	struct desc_struct guest_gdt[GDT_ENTRIES];
 };