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/at91sam9rlek_mmc_defconfig b/configs/at91sam9rlek_mmc_defconfig
index 1d4928f..b18f2d4 100644
--- a/configs/at91sam9rlek_mmc_defconfig
+++ b/configs/at91sam9rlek_mmc_defconfig
@@ -23,11 +23,10 @@
 CONFIG_CMD_SF=y
 # CONFIG_CMD_SOURCE is not set
 # CONFIG_CMD_SETEXPR is not set
-# CONFIG_CMD_NET is not set
-# CONFIG_CMD_NFS is not set
 CONFIG_CMD_FAT=y
 CONFIG_OF_CONTROL=y
 CONFIG_ENV_IS_IN_FAT=y
+# CONFIG_NET is not set
 CONFIG_DM=y
 CONFIG_CLK=y
 CONFIG_CLK_AT91=y