ARM: 7878/1: nommu: Implement dummy early_paging_init()

No-MMU configurations currenty fail to build because they are missing
the early_paging_init() symbol.
Acked-by: NOlof Johansson <olof@lixom.net>
Signed-off-by: NThierry Reding <treding@nvidia.com>
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

arch/arm/mm/nommu.c

@@ -295,6 +295,15 @@ void __init sanity_check_meminfo(void)
 	high_memory = __va(end - 1) + 1;
 }
 
+/*
+ * early_paging_init() recreates boot time page table setup, allowing machines
+ * to switch over to a high (>4G) address space on LPAE systems
+ */
+void __init early_paging_init(const struct machine_desc *mdesc,
+			      struct proc_info_list *procinfo)
+{
+}
+
 /*
  * paging_init() sets up the page tables, initialises the zone memory
  * maps, and sets up the zero page, bad page and bad page tables.