[netdrvr] disable certain drivers that are broken on 64-bit

Disable Toshiba FIR IRDA driver (donauboe) and IBM Lanstreamer
token ring driver on all 64-bit platforms.  Add #error to each driver
explaining the problem, causing build of driver to fail when
BITS_PER_LONG == 64.

drivers/net/irda/Kconfig

@@ -333,7 +333,7 @@ config WINBOND_FIR
 
 config TOSHIBA_FIR
 	tristate "Toshiba Type-O IR Port"
-	depends on IRDA
+	depends on IRDA && !64BIT
 	help
 	  Say Y here if you want to build support for the Toshiba Type-O IR
 	  and Donau oboe chipsets. These chipsets are used by the Toshiba

drivers/net/irda/donauboe.c

@@ -1622,6 +1622,10 @@ toshoboe_open (struct pci_dev *pci_dev, const struct pci_device_id *pdid)
       goto freeregion;
     }
 
+#if (BITS_PER_LONG == 64)
+#error broken on 64-bit:  casts pointer to 32-bit, and then back to pointer.
+#endif
+
   /*We need to align the taskfile on a taskfile size boundary */
   {
     unsigned long addr;

drivers/net/tokenring/Kconfig

@@ -54,7 +54,7 @@ config IBMOL
 
 config IBMLS
 	tristate "IBM Lanstreamer chipset PCI adapter support"
-	depends on TR && PCI
+	depends on TR && PCI && !64BIT
 	help
 	  This is support for IBM Lanstreamer PCI Token Ring Cards.
 

drivers/net/tokenring/lanstreamer.c

@@ -129,6 +129,11 @@
 
 #include "lanstreamer.h"
 
+#if (BITS_PER_LONG == 64)
+#error broken on 64-bit: stores pointer to rx_ring->buffer in 32-bit int
+#endif
+
+
 /* I've got to put some intelligence into the version number so that Peter and I know
  * which version of the code somebody has got. 
  * Version Number = a.b.c.d  where a.b.c is the level of code and d is the latest author.