src: Include <stdint.h> instead of <inttypes.h>

The <inttypes.h> header currently does nothing but include the
definitions from <stdint.h>, so let's #include that directly instead.

Change-Id: I9d83ad37d0d7300a093001596ce3f0b3830c5701
Signed-off-by: Jacob Garber <jgarber1@ualberta.ca>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/34800
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Nico Huber <nico.h@gmx.de>

src/lib/primitive_memtest.c

@@ -13,7 +13,7 @@
  * GNU General Public License for more details.
  */
 
-#include <inttypes.h>
+#include <stdint.h>
 #include <lib.h>
 #include <console/console.h>