imx8: mek: move HUSH_PARSER to defconfig

Move HUSH_PARSER to defconfig, otherwise meet
"
=> run netboot
Booting from net ...
Unknown command 'if' - try 'help'
Unknown command 'then' - try 'help'
Unknown command 'else' - try 'help'
Unknown command 'fi' - try 'help'
Unknown command '0x80280000' - try 'help'
Unknown command 'if' - try 'help'
Unknown command 'then' - try 'help'
Unknown command 'then' - try 'help'
Unknown command 'else' - try 'help'
Unknown command 'fi' - try 'help'
Unknown command 'else' - try 'help'
Unknown command 'fi' - try 'help'
"

Signed-off-by: Peng Fan <peng.fan@nxp.com>
diff --git a/configs/imx8qxp_mek_defconfig b/configs/imx8qxp_mek_defconfig
index 14e9da3..1046c4f 100644
--- a/configs/imx8qxp_mek_defconfig
+++ b/configs/imx8qxp_mek_defconfig
@@ -23,6 +23,7 @@
 CONFIG_SPL_POWER_SUPPORT=y
 CONFIG_SPL_POWER_DOMAIN=y
 CONFIG_SPL_WATCHDOG_SUPPORT=y
+CONFIG_HUSH_PARSER=y
 CONFIG_CMD_CPU=y
 # CONFIG_CMD_IMPORTENV is not set
 CONFIG_CMD_CLK=y
diff --git a/include/configs/imx8qxp_mek.h b/include/configs/imx8qxp_mek.h
index 312e30d..1cff18e 100644
--- a/include/configs/imx8qxp_mek.h
+++ b/include/configs/imx8qxp_mek.h
@@ -159,7 +159,6 @@
 #define CONFIG_BAUDRATE			115200
 
 /* Monitor Command Prompt */
-#define CONFIG_HUSH_PARSER
 #define CONFIG_SYS_PROMPT_HUSH_PS2     "> "
 #define CONFIG_SYS_CBSIZE              2048
 #define CONFIG_SYS_MAXARGS             64