ec/compal/ene932/ec.h: Include stdint.h for definition of 'u8'

Change-Id: I7ffa8e8f807e7d8a778eb80c12a0dc984bdb3f8b
Signed-off-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-on: http://review.coreboot.org/5470
Reviewed-by: Aaron Durbin <adurbin@google.com>
Tested-by: build bot (Jenkins)

src/ec/compal/ene932/ec.h

@@ -24,6 +24,8 @@
 #ifndef _EC_COMPAL_ENE932_EC_H
 #define _EC_COMPAL_ENE932_EC_H
 
+#include <stdint.h>
+
 #define EC_IO 0xfd60 /* Mainboard specific. Could be Kconfig option */
 #define EC_IO_HIGH EC_IO + 1
 #define EC_IO_LOW  EC_IO + 2