x86: Rename pagetable_setup_start() to pagetable_init()

In preparation for unifying the pagetable_setup_start() and
pagetable_setup_done() setup functions, rename appropriately all the
infrastructure related to pagetable_setup_start().

Signed-off-by: Attilio Rao <attilio.rao@citrix.com>
Ackedd-by: <konrad.wilk@oracle.com>
Cc: <Ian.Campbell@citrix.com>
Cc: <Stefano.Stabellini@eu.citrix.com>
Cc: <xen-devel@lists.xensource.com>
Link: http://lkml.kernel.org/r/1345580561-8506-3-git-send-email-attilio.rao@citrix.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
diff --git a/arch/x86/include/asm/x86_init.h b/arch/x86/include/asm/x86_init.h
index 782ba0c..24084b2 100644
--- a/arch/x86/include/asm/x86_init.h
+++ b/arch/x86/include/asm/x86_init.h
@@ -81,11 +81,11 @@
 
 /**
  * struct x86_init_paging - platform specific paging functions
- * @pagetable_setup_start:	platform specific pre paging_init() call
+ * @pagetable_init:		platform specific paging initialization call
  * @pagetable_setup_done:	platform specific post paging_init() call
  */
 struct x86_init_paging {
-	void (*pagetable_setup_start)(void);
+	void (*pagetable_init)(void);
 	void (*pagetable_setup_done)(pgd_t *base);
 };