[powerpc,powerpcspe,ppc64] linux-image: Suppress automatic dbgsym packages

Currently on powerpc, powerpcspe and ppc64 we get an automatic dbgsym
package with symbols for the bootwrapper tools (addnote, hack-coff,
mktree).  We should either put them in linux-image-*-dbgsym or
nowhere.  For now, opt for nowhere.

Move the dh_strip invocation from the install-base rule to the
install-image_... rule.  None of the other packages using install-base
should contain any executables.

debian/changelog

@@ -3,6 +3,7 @@ linux (4.7.4-3) UNRELEASED; urgency=medium
   * [hppa,mips*,powerpc*] linux-image: Strip debug symbols from vmlinux
     (really closes: #837588)
   * [hppa] tracing: Re-enable FTRACE
+  * [powerpc,powerpcspe,ppc64] linux-image: Suppress automatic dbgsym packages
 
  -- Ben Hutchings <ben@decadent.org.uk>  Fri, 23 Sep 2016 00:50:40 +0100
 

debian/rules.real

@@ -197,7 +197,6 @@ ifeq (,$(filter nodoc,$(DEB_BUILD_PROFILES)))
 	dh_installdocs $(INSTALLDOCS_ARGS)
 endif
 	dh_installchangelogs
-	dh_strip
 	dh_compress
 	dh_fixperms
 	dh_installdeb
@@ -407,6 +406,7 @@ endif
 	+$(MAKE_SELF) \
 	  install-image_$(ARCH)_$(FEATURESET)_$(FLAVOUR)_bug \
 	  PACKAGE_DIR='$(PACKAGE_DIR)' PACKAGE_NAME='$(PACKAGE_NAME)' REAL_VERSION='$(REAL_VERSION)'
+	dh_strip --no-automatic-dbgsym
 	+$(MAKE_SELF) install-base GENCONTROL_ARGS='-Vkernel:Recommends='"$$( \
 		if grep -q '^CONFIG_SMP=y' $(DIR)/.config; then \
 			printf irqbalance,; \