h8: Add missing include of stdint.h

h8.h uses u8 without including stdint.h.

Change-Id: I7e46f6b8ca92ed23af93597fe2f08add464eb176
Signed-off-by: Vladimir Serbinenko <phcoder@gmail.com>
Reviewed-on: http://review.coreboot.org/10330
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Edward O'Callaghan <edward.ocallaghan@koparo.com>

src/ec/lenovo/h8/h8.h

@@ -20,6 +20,8 @@
 #ifndef EC_LENOVO_H8_H
 #define EC_LENOVO_H8_H
 
+#include <stdint.h>
+
 void h8_trackpoint_enable(int on);
 void h8_wlan_enable(int on);
 void h8_set_audio_mute(int on);