[PATCH] Fix hw_random build on ia64

The following patch allows hw_random.c to build on ia64.  (The problem
was just that the VIA stuff has i386 assembly in it.  The current code
only probes for VIA on i386 anyway, so this patch just adds more ifdefs
so the VIA code is only built for i386.)

drivers/char/hw_random.c

@@ -92,10 +92,12 @@ static void amd_cleanup(void);
 static unsigned int amd_data_present (void);
 static u32 amd_data_read (void);
 
+#ifdef __i386__
 static int __init via_init(struct pci_dev *dev);
 static void via_cleanup(void);
 static unsigned int via_data_present (void);
 static u32 via_data_read (void);
+#endif
 
 struct rng_operations {
 	int (*init) (struct pci_dev *dev);
@@ -137,8 +139,10 @@ static struct rng_operations rng_vendor_ops[] = {
 	/* rng_hw_amd */
 	{ amd_init, amd_cleanup, amd_data_present, amd_data_read, 4 },
 
+#ifdef __i386__
 	/* rng_hw_via */
 	{ via_init, via_cleanup, via_data_present, via_data_read, 1 },
+#endif
 };
 
 /*
@@ -341,6 +345,7 @@ static void amd_cleanup(void)
 	/* FIXME: twiddle pmio, also? */
 }
 
+#ifdef __i386__
 /***********************************************************************
  *
  * VIA RNG operations
@@ -456,6 +461,7 @@ static void via_cleanup(void)
 {
 	/* do nothing */
 }
+#endif
 
 
 /***********************************************************************