Tidy up some defconfig files

Several files are out of order. This means that when the moveconfig tool
moves CONFIG options to Kconfig it generates a large diff. To avoid this,
reorder the files first.

Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/configs/smdk5420_defconfig b/configs/smdk5420_defconfig
index 253fbe5..e90c765 100644
--- a/configs/smdk5420_defconfig
+++ b/configs/smdk5420_defconfig
@@ -6,12 +6,11 @@
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_SPI_FLASH=y
-CONFIG_USB=y
-CONFIG_DM_USB=y
-CONFIG_CMD_NET=y
 CONFIG_DM_I2C=y
 CONFIG_DM_I2C_COMPAT=y
 CONFIG_DM_PMIC=y
 CONFIG_DM_REGULATOR=y
 CONFIG_VIDEO_BRIDGE=y
 CONFIG_SYS_PROMPT="SMDK5420 # "
+CONFIG_USB=y
+CONFIG_DM_USB=y