x86: Fix getty invocation to wait for a correct device

Looking at the package/systemd/systemd.mk, it looks at this value to
determine whether to configure `getty@.service` or
`serial-getty@.service` for the system console. Because our
configuration expects to have a regular TTY on the VGA console, systemd
should be configured to launch regular getty in there.

Change-Id: I04dc23c8c2e75a8798435f5578bff0be065861cb
diff --git a/configs/czechlight_epia_geode_defconfig b/configs/czechlight_epia_geode_defconfig
index b1d7349..7650667 100644
--- a/configs/czechlight_epia_geode_defconfig
+++ b/configs/czechlight_epia_geode_defconfig
@@ -16,6 +16,7 @@
 BR2_TARGET_GENERIC_ISSUE="Welcome to CzechLight"
 BR2_TARGET_GENERIC_PASSWD_SHA256=y
 BR2_INIT_SYSTEMD=y
+BR2_TARGET_GENERIC_GETTY_PORT="tty0"
 BR2_ENABLE_LOCALE_WHITELIST="C en_US en_US.utf8"
 BR2_ROOTFS_OVERLAY="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/common/overlay/ $(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/epia_geode/overlay/"
 BR2_ROOTFS_POST_BUILD_SCRIPT="$(BR2_EXTERNAL_CZECHLIGHT_PATH)/board/czechlight/common/dhcp-network.sh"