[IA64] Cleanup HPSIM code (was: Re: Enable early console for Ski simulator)

After my last patch we have a new header file for HP simulator use.
Here's code to use it for stuff that used to have `extern' statements
inline in the code. Functionality should not change with this patch.

Signed-off-by: Peter Chubb <[e-mail]>
Signed-off-by: Tony Luck <[e-mail]>

arch/ia64/hp/sim/hpsim_console.c

···
 
 static struct tty_driver *simcons_console_device (struct console *c, int *index)
 {
-	extern struct tty_driver *hp_simserial_driver;
 	*index = c->index;
 	return hp_simserial_driver;
 }

arch/ia64/hp/sim/simeth.c

···
 #include <linux/bitops.h>
 #include <asm/system.h>
 #include <asm/irq.h>
+#include <asm/hpsim.h>
+
+#include "hpsim_ssc.h"
 
 #define SIMETH_RECV_MAX	10
 
···
  */
 #define SIMETH_FRAME_SIZE	ETH_FRAME_LEN
 
-
-#define SSC_NETDEV_PROBE		100
-#define SSC_NETDEV_SEND			101
-#define SSC_NETDEV_RECV			102
-#define SSC_NETDEV_ATTACH		103
-#define SSC_NETDEV_DETACH		104
 
 #define NETWORK_INTR			8
 
···
 
 	return r;
 }
-
-extern long ia64_ssc (long, long, long, long, int);
-extern void ia64_ssc_connect_irq (long intr, long irq);
 
 static inline int
 netdev_probe(char *name, unsigned char *ether)

arch/ia64/hp/sim/simscsi.c

···
 #include <linux/kernel.h>
 #include <linux/timer.h>
 #include <asm/irq.h>
+#include "hpsim_ssc.h"
 
 #include <scsi/scsi.h>
 #include <scsi/scsi_cmnd.h>
···
 	int fd;
 	unsigned count;
 };
-
-extern long ia64_ssc (long arg0, long arg1, long arg2, long arg3, int nr);
 
 static int desc[16] = {
 	-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1

include/asm-ia64/hpsim.h

···
 int simcons_register(void);
 #endif
 
+struct tty_driver;
+extern struct tty_driver *hp_simserial_driver;
+
+void ia64_ssc_connect_irq(long intr, long irq);
+void ia64_ctl_trace(long on);
+
 #endif