UBUNTU: Packaging: Breaks unfixed iscsitarget versions

BugLink: https://bugs.launchpad.net/bugs/1701697

In linux-4.4.0-84, we backported commit
2da62906 ("[net] drop 'size' argument of
sock_recvmsg()"), which breaks building iscsitarget-dkms.

iscsitarget was fixed to build with this new kernel, but we need to add
a Breaks with older versions.
Signed-off-by: Thadeu Lima de Souza Cascardo <cascardo@canonical.com>

debian.master/control.stub.in

@@ -92,6 +92,7 @@ Multi-Arch: foreign
 Section: devel
 Priority: optional
 Depends: ${misc:Depends}, coreutils
+Breaks: iscsitarget-dkms (<< 1.4.20.3+svn502-2ubuntu4.3)
 Description: Header files related to Linux kernel version PKGVER
  This package provides kernel header files for version PKGVER, for sites
  that want the latest kernel headers. Please read