IA64: HP_SIMETH needs to depend upon NET

From: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

arch/ia64/hp/sim/Kconfig

@@ -4,6 +4,7 @@ menu "HP Simulator drivers"
 
 config HP_SIMETH
 	bool "Simulated Ethernet "
+	depends on NET
 
 config HP_SIMSERIAL
 	bool "Simulated serial driver support"