net: Make ZNET driver config depend on X86.

We're now using isa_virt_to_bus(), and there really
isn't a generic and consistent test for whether a
platform provides this interface or not.

This driver is also for an x86-only device.
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/i825xx/Kconfig

@@ -150,7 +150,7 @@ config SUN3_82586
 
 config ZNET
 	tristate "Zenith Z-Note support (EXPERIMENTAL)"
-	depends on EXPERIMENTAL && ISA_DMA_API
+	depends on EXPERIMENTAL && ISA_DMA_API && X86
 	---help---
 	  The Zenith Z-Note notebook computer has a built-in network
 	  (Ethernet) card, and this is the Linux driver for it. Note that the