imx: imx6ul: kontron-sl-mx6ul: Sync devicetrees

Sync the devicetrees with Linux and adjust the board names.

Signed-off-by: Frieder Schrempf <frieder.schrempf@kontron.de>
diff --git a/configs/kontron-sl-mx6ul_defconfig b/configs/kontron-sl-mx6ul_defconfig
index 0cdca7e..aa789fc 100644
--- a/configs/kontron-sl-mx6ul_defconfig
+++ b/configs/kontron-sl-mx6ul_defconfig
@@ -12,7 +12,7 @@
 CONFIG_MX6UL=y
 CONFIG_TARGET_KONTRON_MX6UL=y
 CONFIG_DM_GPIO=y
-CONFIG_DEFAULT_DEVICE_TREE="imx6ul-kontron-n631x-s"
+CONFIG_DEFAULT_DEVICE_TREE="imx6ul-kontron-bl"
 CONFIG_SPL_TEXT_BASE=0x00908000
 CONFIG_SPL_MMC=y
 CONFIG_SPL_SERIAL=y
@@ -60,7 +60,7 @@
 CONFIG_CMD_UBI=y
 CONFIG_OF_CONTROL=y
 CONFIG_SPL_OF_CONTROL=y
-CONFIG_OF_LIST="imx6ul-kontron-n631x-s imx6ull-kontron-n641x-s"
+CONFIG_OF_LIST="imx6ul-kontron-bl imx6ull-kontron-bl"
 CONFIG_ENV_OVERWRITE=y
 CONFIG_ENV_IS_IN_MMC=y
 CONFIG_ENV_IS_IN_SPI_FLASH=y