Revert "ccimx8x: prohibit dey-image-qt from building when trustfence is enabled"

Added Trusfence support for the CC8X.

This reverts commit 8b5c710036.

https://jira.digi.com/browse/DEL-6917

meta-digi-dey/classes/trustfence.bbclass

@@ -36,10 +36,6 @@ python () {
     import hashlib
     import os
 
-    if ("ccimx8x" in d.getVar("MACHINE", True)):
-        bb.fatal("Trustfence is not currently supported on the ccimx8x SOM")
-        return
-
     # Secure console configuration
     if (d.getVar("TRUSTFENCE_CONSOLE_DISABLE", True) == "1"):
         d.appendVar("UBOOT_EXTRA_CONF", "CONFIG_CONSOLE_DISABLE=y ")