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/edb9315a_defconfig b/configs/edb9315a_defconfig
index 8a76405..c56f90a 100644
--- a/configs/edb9315a_defconfig
+++ b/configs/edb9315a_defconfig
@@ -2,6 +2,9 @@
 CONFIG_TARGET_EDB93XX=y
 CONFIG_SYS_EXTRA_OPTIONS="MK_edb9315a"
 CONFIG_HUSH_PARSER=y
+CONFIG_SYS_PROMPT="EDB9315A> "
 # CONFIG_CMD_XIMG is not set
+CONFIG_CMD_USB=y
 # CONFIG_CMD_FPGA is not set
 # CONFIG_CMD_SETEXPR is not set
+CONFIG_CMD_DHCP=y