net: Make CMD_NET a menuconfig

Previously, CMD_NET was an alias for 2 commands (bootp and tftpboot) and
they we not able to be disabled. Separate out those 2 commands and move
CMD_NET up to the menu level, which more accurately represents the code.

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

Reviewed-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Duncan Hare <dh@synoia.com>
diff --git a/net/Kconfig b/net/Kconfig
index 143c441..d421a34 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -24,7 +24,7 @@
 
 config NET_TFTP_VARS
 	bool "Control TFTP timeout and count through environment"
-	depends on CMD_NET
+	depends on CMD_TFTPBOOT
 	default y
 	help
 	  If set, allows controlling the TFTP timeout through the
@@ -35,39 +35,38 @@
 
 config BOOTP_BOOTPATH
 	bool "Enable BOOTP BOOTPATH"
-	depends on CMD_NET
+	depends on CMD_BOOTP
 
 config BOOTP_DNS
 	bool "Enable bootp DNS"
-	depends on CMD_NET
+	depends on CMD_BOOTP
 
 config BOOTP_GATEWAY
 	bool "Enable BOOTP gateway"
-	depends on CMD_NET
+	depends on CMD_BOOTP
 
 config BOOTP_HOSTNAME
 	bool "Enable BOOTP hostname"
-	depends on CMD_NET
+	depends on CMD_BOOTP
 
 config BOOTP_PXE
 	bool "Enable BOOTP PXE"
-	depends on CMD_NET
+	depends on CMD_BOOTP
 
 config BOOTP_SUBNETMASK
 	bool "Enable BOOTP subnetmask"
-	depends on CMD_NET
-	depends on CMD_NET
+	depends on CMD_BOOTP
 
 config BOOTP_PXE_CLIENTARCH
 	hex
-	depends on CMD_NET
+	depends on CMD_BOOTP
         default 0x16 if ARM64
         default 0x15 if ARM
         default 0 if X86
 
 config BOOTP_VCI_STRING
 	string
-	depends on CMD_NET
+	depends on CMD_BOOTP
 	default "U-Boot.armv7" if CPU_V7 || CPU_V7M
 	default "U-Boot.armv8" if ARM64
 	default "U-Boot.arm" if ARM
diff --git a/net/Makefile b/net/Makefile
index ae54eee..ed102ec 100644
--- a/net/Makefile
+++ b/net/Makefile
@@ -9,7 +9,7 @@
 
 obj-y += checksum.o
 obj-$(CONFIG_CMD_NET)  += arp.o
-obj-$(CONFIG_CMD_NET)  += bootp.o
+obj-$(CONFIG_CMD_BOOTP) += bootp.o
 obj-$(CONFIG_CMD_CDP)  += cdp.o
 obj-$(CONFIG_CMD_DNS)  += dns.o
 ifdef CONFIG_DM_ETH
@@ -24,7 +24,7 @@
 obj-$(CONFIG_CMD_PING) += ping.o
 obj-$(CONFIG_CMD_RARP) += rarp.o
 obj-$(CONFIG_CMD_SNTP) += sntp.o
-obj-$(CONFIG_CMD_NET)  += tftp.o
+obj-$(CONFIG_CMD_TFTPBOOT) += tftp.o
 
 # Disable this warning as it is triggered by:
 # sprintf(buf, index ? "foo%d" : "foo", index)