fix networking support in vexpress emulation, new style is not working here.

target/arm/Makefile

@@ -24,7 +24,7 @@ NET:=-net user -net nic,model=smc91c111
 endif
 ifeq ($(ADK_TARGET_QEMU_ARM_MODEL_VEXPRESS_A9),y)
 MACH:=vexpress-a9
-NET:=-cpu cortex-a9 -device lan9118,netdev=adk0 -netdev user,id=adk0
+NET:=-cpu cortex-a9 -net user -net nic,model=lan9118
 endif
 
 kernel-install:

target/arm/kernel/qemu-arm-vexpress-a9

@@ -21,8 +21,3 @@ CONFIG_NET_VENDOR_SMSC=y
 CONFIG_SMSC911X=y
 CONFIG_SERIAL_AMBA_PL011=y
 CONFIG_SERIAL_AMBA_PL011_CONSOLE=y
-CONFIG_I2C=y
-CONFIG_I2C_VERSATILE=y
-CONFIG_SENSORS_VEXPRESS=y
-CONFIG_REGULATOR=y
-CONFIG_REGULATOR_VEXPRESS=y