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/calimain_defconfig b/configs/calimain_defconfig
index 374023e..a2ba4b0 100644
--- a/configs/calimain_defconfig
+++ b/configs/calimain_defconfig
@@ -1,6 +1,7 @@
 CONFIG_ARM=y
 CONFIG_ARCH_DAVINCI=y
 CONFIG_TARGET_CALIMAIN=y
+CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="Calimain > "
 CONFIG_AUTOBOOT_KEYED=y
 CONFIG_AUTOBOOT_STOP_STR="\x0b"