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/MPC8349ITX_defconfig b/configs/MPC8349ITX_defconfig
index bc49a39..90a0df5 100644
--- a/configs/MPC8349ITX_defconfig
+++ b/configs/MPC8349ITX_defconfig
@@ -4,6 +4,7 @@
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
 CONFIG_SYS_EXTRA_OPTIONS="MPC8349ITX"
+CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="MPC8349E-mITX> "
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_SYS_NS16550=y