ARM: shmobile: marzen: Enable CONFIG_PACKET in defconfig

CONFIG_PACKET is required for the ISC dhcpd daemon function.
This change brings the marzen defconfig into line with
other shmobile defconfigs.
Signed-off-by: Simon Horman <horms@verge.net.au>

arch/arm/configs/marzen_defconfig

@@ -35,6 +35,7 @@ CONFIG_KEXEC=y
 # CONFIG_CORE_DUMP_DEFAULT_ELF_HEADERS is not set
 CONFIG_PM_RUNTIME=y
 CONFIG_NET=y
+CONFIG_PACKET=y
 CONFIG_UNIX=y
 CONFIG_INET=y
 CONFIG_IP_PNP=y