subsys: console: Add missing zephyr/types.h include

console_getchar() returns a u8_t so we need to include the definition
of that to avoid compilation errors.

Change-Id: I1f16ce7942c90555463417e23a60eaa34cb091f4
Signed-off-by: Jon Medhurst <tixy@linaro.org>

include/console.h

@@ -7,6 +7,8 @@
 #ifndef __CONSOLE_H__
 #define __CONSOLE_H__
 
+#include <zephyr/types.h>
+
 #ifdef __cplusplus
 extern "C" {
 #endif