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/vexpress_aemv8a_juno_defconfig b/configs/vexpress_aemv8a_juno_defconfig
index c702800..b9bfc26 100644
--- a/configs/vexpress_aemv8a_juno_defconfig
+++ b/configs/vexpress_aemv8a_juno_defconfig
@@ -2,6 +2,7 @@
 CONFIG_TARGET_VEXPRESS64_JUNO=y
 CONFIG_SYS_MALLOC_F_LEN=0x2000
 CONFIG_DM_SERIAL=y
+CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="VExpress64# "
 # CONFIG_CMD_CONSOLE is not set
 # CONFIG_CMD_IMLS is not set