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/bcm911360_entphn-ns_defconfig b/configs/bcm911360_entphn-ns_defconfig
index c1b41eb..fc78fc0 100644
--- a/configs/bcm911360_entphn-ns_defconfig
+++ b/configs/bcm911360_entphn-ns_defconfig
@@ -1,6 +1,7 @@
 CONFIG_ARM=y
 CONFIG_TARGET_BCMCYGNUS=y
 CONFIG_SYS_EXTRA_OPTIONS="SYS_SDRAM_SIZE=0x20000000,ARMV7_NONSEC"
+CONFIG_HUSH_PARSER=y
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_SETEXPR is not set