net: Make NET imply NETDEVICES

Normally, when NET is enabled, CMD_NET will then be enabled and in turn
NETDEVICES will (likely) be enabled via imply. However, if we disable
CMDLINE in a defconfig we now no longer get CMD_NET enabling NETDEVICES
for us. This suggestion (as an imply is) really isn't about the network
commands but network itself and is a legacy of how intertwined
NET/CMD_NET were historically. Move this over to the NET entry instead
where it is a more logical fit.

Reported-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 6f63615..9ebea76 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -1681,7 +1681,6 @@
 menuconfig CMD_NET
 	bool "Network commands"
 	default y
-	imply NETDEVICES
 
 if CMD_NET
 
diff --git a/net/Kconfig b/net/Kconfig
index 4215889..8c80b3a 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -5,6 +5,7 @@
 menuconfig NET
 	bool "Networking support"
 	default y
+	imply NETDEVICES
 
 if NET