This change should be reverted. Just pretending the support of sys/sdt.h for all architectures is the wrong thing to do. Please make the package architecture dependent again, and move the package to /usr/include/<multiarch>.
If you really are too lazy to have architecture specific build dependencies, then consider shipping an empty package for the unsupported architectures. -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org