meminfo: add memory details for armv8

Upcoming patches are mapping memory with RO, RW^X etc permsissions.
Fix the meminfo command to display them properly

Acked-by: Jerome Forissier <jerome.forissier@linaro.org>
Reviewed-by: Caleb Connolly <caleb.connolly@linaro.org>
Signed-off-by: Ilias Apalodimas <ilias.apalodimas@linaro.org>
diff --git a/arch/arm/include/asm/armv8/mmu.h b/arch/arm/include/asm/armv8/mmu.h
index 0ab681c..6af8cd1 100644
--- a/arch/arm/include/asm/armv8/mmu.h
+++ b/arch/arm/include/asm/armv8/mmu.h
@@ -66,6 +66,7 @@
 #define PTE_BLOCK_NG		(1 << 11)
 #define PTE_BLOCK_PXN		(UL(1) << 53)
 #define PTE_BLOCK_UXN		(UL(1) << 54)
+#define PTE_BLOCK_RO            (UL(1) << 7)
 
 /*
  * AttrIndx[2:0]
@@ -75,6 +76,7 @@
 #define PMD_ATTRMASK		(PTE_BLOCK_PXN		| \
 				 PTE_BLOCK_UXN		| \
 				 PMD_ATTRINDX_MASK	| \
+				 PTE_BLOCK_RO		| \
 				 PTE_TYPE_VALID)
 
 /*