kbuild: deb-pkg: add pkg.linux-upstream.nokerneldbg build profile

The Debian kernel supports the pkg.linux.nokerneldbg build profile.

The debug package tends to become huge, and you may not want to build
it even when CONFIG_DEBUG_INFO is enabled.

This commit introduces a similar profile for the upstream kernel.

Signed-off-by: Masahiro Yamada <[e-mail]>
Reviewed-by: Nicolas Schier <[e-mail]>

scripts/package/mkdebian

···
 Package: linux-image-$version-dbg
 Section: debug
 Architecture: $debarch
+Build-Profiles: <!pkg.${sourcename}.nokerneldbg>
 Description: Linux kernel debugging symbols for $version
  This package will come in handy if you need to debug the kernel. It provides
  all the necessary debug symbols for the kernel and its modules.