colibri-imx8x: set bootaux memory base and size

Move i.MX auxiliary core memory base and size configuration
to defconfig where it should belong.

Signed-off-by: Andrejs Cainikovs <andrejs.cainikovs@toradex.com>
diff --git a/configs/colibri-imx8x_defconfig b/configs/colibri-imx8x_defconfig
index 2269ba6..82a7c22 100644
--- a/configs/colibri-imx8x_defconfig
+++ b/configs/colibri-imx8x_defconfig
@@ -10,6 +10,8 @@
 CONFIG_ENV_OFFSET=0xFFFFDE00
 CONFIG_DM_GPIO=y
 CONFIG_DEFAULT_DEVICE_TREE="fsl-imx8qxp-colibri"
+CONFIG_BOOTAUX_RESERVED_MEM_BASE=0x88000000
+CONFIG_BOOTAUX_RESERVED_MEM_SIZE=0x08000000
 CONFIG_TARGET_COLIBRI_IMX8X=y
 CONFIG_SYS_PROMPT="Colibri iMX8X # "
 CONFIG_SYS_LOAD_ADDR=0x95c00000