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/kernel/setup.c b/arch/x86/kernel/setup.c
index 90cbbe0..61b7d98 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -961,7 +961,7 @@
 	kvmclock_init();
 #endif
 
-	x86_init.paging.pagetable_setup_start();
+	x86_init.paging.pagetable_init();
 	paging_init();
 	x86_init.paging.pagetable_setup_done(swapper_pg_dir);