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/stm32h743-disco_defconfig b/configs/stm32h743-disco_defconfig
index ea1405d..c6a0d10 100644
--- a/configs/stm32h743-disco_defconfig
+++ b/configs/stm32h743-disco_defconfig
@@ -19,8 +19,6 @@
 CONFIG_CMD_GPT=y
 CONFIG_CMD_MMC=y
 # CONFIG_CMD_SETEXPR is not set
-# CONFIG_CMD_NET is not set
-# CONFIG_CMD_NFS is not set
 CONFIG_CMD_TIMER=y
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_EXT4=y
@@ -29,6 +27,7 @@
 CONFIG_CMD_FS_GENERIC=y
 CONFIG_OF_CONTROL=y
 CONFIG_OF_EMBED=y
+# CONFIG_NET is not set
 CONFIG_DM_MMC=y
 CONFIG_STM32_SDMMC2=y
 # CONFIG_PINCTRL_FULL is not set