netmodule-image: Exclude bootloader-config for IMX

bootloader-config does not support the imx bootloader setup. It can only
identify uboot and is therefor failing on IMX targets.

BugzID: 69098

recipes-core/images/netmodule-linux-image.bb

@@ -56,7 +56,7 @@ IMAGE_INSTALL_append = " \
                 wireless-regdb-static \
                 udev-rules-nmhw \
                 nmhw-fwupdate \
-                bootloader-config \
+                ${@bb.utils.contains("MACHINE_FEATURES", "imx-boot", "", "bootloader-config", d)} \
                 sys-mon \
                 scripts-nm \
                 mmc-utils \