qemu/common : change DEVICE2 definition for MMU

DEVICE2 is not currently used on qemu platform but is needed for
a future patch for qemu_sbsa platform. Change its definition to
RW and add it to all levels of arm-tf similar to DEVICE1 definition.
Signed-off-by: Graeme Gregory <graeme@nuviainc.com>
Change-Id: I03495471bfd423b61ad44ec4953fb25f76aa54bf

plat/qemu/common/qemu_common.c

@@ -26,7 +26,7 @@
 #ifdef DEVICE2_BASE
 #define MAP_DEVICE2	MAP_REGION_FLAT(DEVICE2_BASE,			\
 					DEVICE2_SIZE,			\
-					MT_DEVICE | MT_RO | MT_SECURE)
+					MT_DEVICE | MT_RW | MT_SECURE)
 #endif
 
 #define MAP_SHARED_RAM	MAP_REGION_FLAT(SHARED_RAM_BASE,		\
@@ -93,6 +93,9 @@ static const mmap_region_t plat_qemu_mmap[] = {
 #ifdef MAP_DEVICE1
 	MAP_DEVICE1,
 #endif
+#ifdef MAP_DEVICE2
+	MAP_DEVICE2,
+#endif
 #if SPM_MM
 	MAP_NS_DRAM0,
 	QEMU_SPM_BUF_EL3_MMAP,
@@ -108,6 +111,9 @@ static const mmap_region_t plat_qemu_mmap[] = {
 	MAP_DEVICE0,
 #ifdef MAP_DEVICE1
 	MAP_DEVICE1,
+#endif
+#ifdef MAP_DEVICE2
+	MAP_DEVICE2,
 #endif
 	{0}
 };