configs/expu1/seli8: limit autoboot stop to space key

Make it in a same way as on the other FOXMC products, this also helps to
avoid unwanted stop caused by some terminal servers that are sending junk
on the serial line.

Signed-off-by: Aleksandar Gerasimovski <aleksandar.gerasimovski@hitachienergy.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/configs/pg_wcom_expu1_defconfig b/configs/pg_wcom_expu1_defconfig
index a85838b..8238ca8 100644
--- a/configs/pg_wcom_expu1_defconfig
+++ b/configs/pg_wcom_expu1_defconfig
@@ -29,6 +29,9 @@
 CONFIG_OF_BOARD_SETUP=y
 CONFIG_OF_STDOUT_VIA_ALIAS=y
 CONFIG_BOOTDELAY=3
+CONFIG_AUTOBOOT_KEYED=y
+CONFIG_AUTOBOOT_STOP_STR=" "
+CONFIG_AUTOBOOT_PROMPT="Hit <SPACE> key to stop autoboot in %2ds\n"
 CONFIG_USE_BOOTARGS=y
 CONFIG_BOOTARGS="console=ttyS0,115200 root=/dev/ram0"
 CONFIG_SILENT_CONSOLE=y