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/integratorap_cm720t_defconfig b/configs/integratorap_cm720t_defconfig
index 6291139..e6b0bc4 100644
--- a/configs/integratorap_cm720t_defconfig
+++ b/configs/integratorap_cm720t_defconfig
@@ -2,6 +2,7 @@
 CONFIG_ARCH_INTEGRATOR=y
 CONFIG_ARCH_INTEGRATOR_AP=y
 CONFIG_CM720T=y
+CONFIG_HUSH_PARSER=y
 CONFIG_SYS_PROMPT="Integrator-AP # "
 # CONFIG_CMD_SETEXPR is not set
 CONFIG_OF_LIBFDT=y