configs: Re-sync HUSH options

Move all cases of CONFIG_SYS_HUSH_PARSER out of the config.h files.  Remove
all cases of CONFIG_SYS_PROMPT_HUSH_PS2 as everyone uses the default.

Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/smdkc100_defconfig b/configs/smdkc100_defconfig
index cbd8cc3..01a3eb0 100644
--- a/configs/smdkc100_defconfig
+++ b/configs/smdkc100_defconfig
@@ -2,6 +2,7 @@
 CONFIG_ARCH_S5PC1XX=y
 CONFIG_TARGET_SMDKC100=y
 CONFIG_DEFAULT_DEVICE_TREE="s5pc1xx-smdkc100"
+CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="SMDKC100 # "
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set