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/vinco_defconfig b/configs/vinco_defconfig
index 565577d..29da314 100644
--- a/configs/vinco_defconfig
+++ b/configs/vinco_defconfig
@@ -2,6 +2,7 @@
 CONFIG_ARCH_AT91=y
 CONFIG_TARGET_VINCO=y
 CONFIG_SYS_EXTRA_OPTIONS="SAMA5D4,SYS_USE_SERIALFLASH"
+CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="vinco => "
 # CONFIG_CMD_IMI is not set
 # CONFIG_CMD_IMLS is not set