vmalloc: add @align to vm_area_register_early()

Impact: allow larger alignment for early vmalloc area allocation

Some early vmalloc users might want larger alignment, for example, for
custom large page mapping.  Add @align to vm_area_register_early().
While at it, drop docbook comment on non-existent @size.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
diff --git a/arch/alpha/mm/init.c b/arch/alpha/mm/init.c
index df6df02..91eddd8 100644
--- a/arch/alpha/mm/init.c
+++ b/arch/alpha/mm/init.c
@@ -200,7 +200,7 @@
 		/* register the vm area */
 		console_remap_vm.flags = VM_ALLOC;
 		console_remap_vm.size = nr_pages << PAGE_SHIFT;
-		vm_area_register_early(&console_remap_vm);
+		vm_area_register_early(&console_remap_vm, PAGE_SIZE);
 
 		vaddr = (unsigned long)consle_remap_vm.addr;