[ARM] mm 6: allow mem_types table to specify extended pte attributes

Add prot_pte_ext to the mem_types table to allow the extended pte
attributes to be passed to set_pte_ext(), thereby permitting us to
specify memory type information for the hardware PTE entries.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mm/mm.h b/arch/arm/mm/mm.h
index 66f8612..7647c59 100644
--- a/arch/arm/mm/mm.h
+++ b/arch/arm/mm/mm.h
@@ -18,6 +18,7 @@
 
 struct mem_type {
 	unsigned int prot_pte;
+	unsigned int prot_pte_ext;
 	unsigned int prot_l1;
 	unsigned int prot_sect;
 	unsigned int domain;