fix: libc: use long for 64-bit types on aarch64

Use long instead of long long on aarch64 for 64_t stdint types.
Introduce inttypes.h to properly support printf format specifiers for
fixed width types for such change.

Change-Id: I0bca594687a996fde0a9702d7a383055b99f10a1
Signed-off-by: Scott Branden <scott.branden@broadcom.com>
diff --git a/plat/renesas/rzg/bl2_plat_setup.c b/plat/renesas/rzg/bl2_plat_setup.c
index ccc2562..e9dbd20 100644
--- a/plat/renesas/rzg/bl2_plat_setup.c
+++ b/plat/renesas/rzg/bl2_plat_setup.c
@@ -4,6 +4,8 @@
  * SPDX-License-Identifier: BSD-3-Clause
  */
 
+#include <inttypes.h>
+#include <stdint.h>
 #include <string.h>
 
 #include <arch_helpers.h>
@@ -531,7 +533,7 @@
 			continue;
 		}
 
-		NOTICE("BL2: CH%d: %llx - %llx, %lld %siB\n",
+		NOTICE("BL2: CH%d: %" PRIx64 " - %" PRIx64 ", %" PRId64 " %siB\n",
 		       chan, start, start + size - 1U,
 		       (size >> 30) ? : size >> 20,
 		       (size >> 30) ? "G" : "M");