configs: Re-sync almost all of cmd/Kconfig

This syncs up the current cmd/Kconfig and include/configs/ files with the
only exception being CMD_NAND.  Due to how we have used this historically
we need to take further care here when converting.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/silk_defconfig b/configs/silk_defconfig
index 67fca2a..acad1d6 100644
--- a/configs/silk_defconfig
+++ b/configs/silk_defconfig
@@ -10,11 +10,17 @@
 # CONFIG_CMD_ENV_EXISTS is not set
 # CONFIG_CMD_LOADB is not set
 # CONFIG_CMD_FLASH is not set
+CONFIG_CMD_SF=y
+CONFIG_CMD_SPI=y
+CONFIG_CMD_I2C=y
+CONFIG_CMD_USB=y
 # CONFIG_CMD_FPGA is not set
 # CONFIG_CMD_ECHO is not set
 # CONFIG_CMD_ITEST is not set
 # CONFIG_CMD_SOURCE is not set
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_DHCP=y
+CONFIG_CMD_PING=y
 # CONFIG_CMD_MISC is not set
 CONFIG_SH_SDHI=y
 CONFIG_SPI_FLASH=y