debian/control: Add workaround for libdpkg-perl bugs #827628, #827633

Dpkg::Deps has a couple of bugs that were resulting in the
libssl-dev:native build-dependency being discarded by dpkg-source.

debian/changelog

@@ -18,6 +18,7 @@ linux (4.7~rc3-1~exp1) UNRELEASED; urgency=medium
   * linux-cpupower: Define PACKAGE_BUGREPORT to refer to reportbug, not upstream
   * debian/README.source: Document the supported build profiles
   * debian/control: Fix build-dependencies for cross-building
+    - Add workaround for libdpkg-perl bugs #827628, #827633
   * Add support for the nopython build profile, disabling the linux-perf package
   * Fix build rules for userland tools to support cross-building
 

debian/templates/control.source.in

@@ -20,7 +20,8 @@ Build-Depends:
 # used by upstream to build include/generated/timeconst.h
  bc <!stage1>,
 # used by upstream to build signing tools and to process certificates
- libssl-dev:native <!stage1>, libssl-dev <!stage1 !pkg.linux.notools cross>,
+# (the arch-qualification is a workaround for #827628 and #827633)
+ libssl-dev:native <!stage1>, libssl-dev [linux-any] <!stage1 !pkg.linux.notools cross>,
  openssl:native <!stage1>,
 # used by upstream to build perf documentation
  asciidoc <!stage1 !nodoc !pkg.linux.notools>,