net: Make core net code depend on NET instead of CMD_NET

No commands are necessary to have a network stack.

Signed-off-by: Joe Hershberger <joe.hershberger@ni.com>

Reviewed-by: Duncan Hare <dh@synoia.com>

net/Makefile

@@ -8,18 +8,18 @@
 #ccflags-y += -DDEBUG
 
 obj-y += checksum.o
-obj-$(CONFIG_CMD_NET)  += arp.o
+obj-$(CONFIG_NET)      += arp.o
 obj-$(CONFIG_CMD_BOOTP) += bootp.o
 obj-$(CONFIG_CMD_CDP)  += cdp.o
 obj-$(CONFIG_CMD_DNS)  += dns.o
 ifdef CONFIG_DM_ETH
-obj-$(CONFIG_CMD_NET)  += eth-uclass.o
+obj-$(CONFIG_NET)      += eth-uclass.o
 else
-obj-$(CONFIG_CMD_NET)  += eth_legacy.o
+obj-$(CONFIG_NET)      += eth_legacy.o
 endif
-obj-$(CONFIG_CMD_NET)  += eth_common.o
+obj-$(CONFIG_NET)      += eth_common.o
 obj-$(CONFIG_CMD_LINK_LOCAL) += link_local.o
-obj-$(CONFIG_CMD_NET)  += net.o
+obj-$(CONFIG_NET)      += net.o
 obj-$(CONFIG_CMD_NFS)  += nfs.o
 obj-$(CONFIG_CMD_PING) += ping.o
 obj-$(CONFIG_CMD_RARP) += rarp.o