ppp: make ppp_fsm.h self-contained

We need to include <stdint.h> to define 'uint16_t' and "triton.h" for
'struct triton_timer_t'.

Also, let's include "ppp.h" so that we don't need a forward declaration
for 'struct ppp_t'.
Signed-off-by: NGuillaume Nault <g.nault@alphalink.fr>

accel-pppd/ppp/ppp_fsm.h

 #ifndef PPP_FSM_H
 #define PPP_FSM_H
 
+#include <stdint.h>
+
+#include "ppp.h"
+#include "triton.h"
+
 typedef enum {FSM_Initial=0,FSM_Starting,FSM_Closed,FSM_Stopped,FSM_Closing,FSM_Stopping,FSM_Req_Sent,FSM_Ack_Rcvd,FSM_Ack_Sent,FSM_Opened} FSM_STATE;
 /*
  *  CP (LCP, IPCP, etc.) codes.
@@ -18,8 +23,6 @@ typedef enum {FSM_Initial=0,FSM_Starting,FSM_Closed,FSM_Stopped,FSM_Closing,FSM_
 #define DISCARDREQ	11	/* Discard Request */
 #define	IDENT		  12	/* Identification */
 
-struct ppp_t;
-
 struct ppp_fsm_t
 {
 	struct ppp_t *ppp;