Kconfig: cmd: Make networking command dependent on NET

Enable networking command only when NET is enabled.
And remove selecting NET for CMD_NET

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/topic_miami_defconfig b/configs/topic_miami_defconfig
index d5929a1..945431c 100644
--- a/configs/topic_miami_defconfig
+++ b/configs/topic_miami_defconfig
@@ -24,7 +24,7 @@
 CONFIG_CMD_USB=y
 # CONFIG_CMD_SETEXPR is not set
 # CONFIG_CMD_NET is not set
-# CONFIG_CMD_NFS is not set
+# CONFIG_CMD_MII is not set
 CONFIG_CMD_CACHE=y
 CONFIG_OF_EMBED=y
 CONFIG_SPL_DM_SEQ_ALIAS=y
@@ -54,3 +54,4 @@
 CONFIG_CI_UDC=y
 CONFIG_USB_GADGET_DOWNLOAD=y
 CONFIG_USB_FUNCTION_THOR=y
+# CONFIG_REGEX is not set