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/astro_mcf5373l_defconfig b/configs/astro_mcf5373l_defconfig
index 1da339c..2302b1f 100644
--- a/configs/astro_mcf5373l_defconfig
+++ b/configs/astro_mcf5373l_defconfig
@@ -12,11 +12,10 @@
 CONFIG_CMD_FPGA_LOADMK=y
 CONFIG_CMD_I2C=y
 # CONFIG_CMD_SETEXPR is not set
-# CONFIG_CMD_NET is not set
-# CONFIG_CMD_NFS is not set
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_DATE=y
 CONFIG_CMD_JFFS2=y
+# CONFIG_NET is not set
 CONFIG_FPGA_ALTERA=y
 CONFIG_FPGA_CYCLON2=y
 CONFIG_FPGA_XILINX=y