ARM: at91: Change the internal SRAM memory type MT_MEMORY_NONCACHED

Because MT_DEVICE is not executable in armv7, we change
the internal SRAM memory type to MT_MEMORY_NONCACHED.
As it seems that caching this internal SRAM memory is not necessary,
we chose the this memory type.

Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
diff --git a/arch/arm/mach-at91/setup.c b/arch/arm/mach-at91/setup.c
index e2f4bdd..942dc00 100644
--- a/arch/arm/mach-at91/setup.c
+++ b/arch/arm/mach-at91/setup.c
@@ -80,7 +80,7 @@
 
 	desc->pfn = __phys_to_pfn(base);
 	desc->length = length;
-	desc->type = MT_DEVICE;
+	desc->type = MT_MEMORY_NONCACHED;
 
 	pr_info("AT91: sram at 0x%lx of 0x%x mapped at 0x%lx\n",
 		base, length, desc->virtual);