[ARM] remove 'prot_pte_ext' from memory type table

This member is now redundant; the memory type is encoded in the Linux
PTE bits.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mm/ioremap.c b/arch/arm/mm/ioremap.c
index b81dbf9..33eeab0 100644
--- a/arch/arm/mm/ioremap.c
+++ b/arch/arm/mm/ioremap.c
@@ -55,8 +55,7 @@
 		if (!pte_none(*pte))
 			goto bad;
 
-		set_pte_ext(pte, pfn_pte(phys_addr >> PAGE_SHIFT, prot),
-			    type->prot_pte_ext);
+		set_pte_ext(pte, pfn_pte(phys_addr >> PAGE_SHIFT, prot), 0);
 		phys_addr += PAGE_SIZE;
 	} while (pte++, addr += PAGE_SIZE, addr != end);
 	return 0;