board: ge: bx50v3: make network support optional and disabled by default

The network support is only useful for development and shouldn't be enabled
in production, so it has to be disabled in U-boot by default.

Signed-off-by: Andrew Shadura <andrew.shadura@collabora.co.uk>
diff --git a/configs/ge_b450v3_defconfig b/configs/ge_b450v3_defconfig
index 98bf52e..a8628d2 100644
--- a/configs/ge_b450v3_defconfig
+++ b/configs/ge_b450v3_defconfig
@@ -9,9 +9,7 @@
 CONFIG_CMD_SF=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_GPIO=y
-CONFIG_CMD_DHCP=y
-CONFIG_CMD_MII=y
-CONFIG_CMD_PING=y
+CONFIG_CMD_NET=n
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_EXT4=y
diff --git a/configs/ge_b650v3_defconfig b/configs/ge_b650v3_defconfig
index b66c98b..ce39521 100644
--- a/configs/ge_b650v3_defconfig
+++ b/configs/ge_b650v3_defconfig
@@ -9,9 +9,7 @@
 CONFIG_CMD_SF=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_GPIO=y
-CONFIG_CMD_DHCP=y
-CONFIG_CMD_MII=y
-CONFIG_CMD_PING=y
+CONFIG_CMD_NET=n
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_EXT4=y
diff --git a/configs/ge_b850v3_defconfig b/configs/ge_b850v3_defconfig
index 1cd126a..d2f6f86 100644
--- a/configs/ge_b850v3_defconfig
+++ b/configs/ge_b850v3_defconfig
@@ -9,9 +9,7 @@
 CONFIG_CMD_SF=y
 CONFIG_CMD_I2C=y
 CONFIG_CMD_GPIO=y
-CONFIG_CMD_DHCP=y
-CONFIG_CMD_MII=y
-CONFIG_CMD_PING=y
+CONFIG_CMD_NET=n
 CONFIG_CMD_CACHE=y
 CONFIG_CMD_EXT2=y
 CONFIG_CMD_EXT4=y