debian/control: Fix version in dependencies on linux-headers-*-common*

linux-headers-*-common* packages are arch-independent since version
4.9~rc7-1~exp1, so to allow for binNMUs we need to specify
${source:Version} in versioned dependencies on them.

Closes: #869511

debian/changelog

@@ -18,6 +18,8 @@ linux (4.12.3-1~exp1) UNRELEASED; urgency=medium
   * [armhf] Revert "gpu: host1x: Add IOMMU support"
   * [armhf] udeb: Replace imx-ipuv3-crtc with imxdrm in fb-modules
   * [i386] perf tools: Fix unwind build (fixes FTBFS)
+  * debian/control: Fix version in dependencies on arch-independent
+    linux-headers-*-common* (Closes: #869511)
 
  -- Ben Hutchings <ben@decadent.org.uk>  Tue, 18 Jul 2017 13:26:41 +0100
 

debian/templates/control.headers.in

@@ -1,6 +1,6 @@
 Package: linux-headers-@abiname@@localversion@
 Build-Profiles: <!stage1>
-Depends: linux-headers-@abiname@-common@localversion_headers@ (= ${binary:Version}), linux-kbuild-@version@, ${misc:Depends}
+Depends: linux-headers-@abiname@-common@localversion_headers@ (= ${source:Version}), linux-kbuild-@version@, ${misc:Depends}
 Description: Header files for Linux @abiname@@localversion@
  This package provides the architecture-specific kernel header files
  for Linux kernel @abiname@@localversion@, generally