gdb: do not build documentation for bfd and gprof

Our previous patch to disable the documentation in gdb wasn't complete.
There are cases where the documentation under bfd and gprof directories
is being built, causing the subsequent failure due to missing makeinfo.
This patch fixes that problem.

Fixes:

  http://autobuild.buildroot.org/results/244/2442e697d8a300496434fd42fcb1ee3941d13e06/

Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/gdb/gdb.mk

@@ -54,6 +54,12 @@ endif
 # Prevent gdb to build the documentation
 define GDB_DISABLE_DOC
 	$(SED) '/^SUBDIRS =/ s/doc//' $(@D)/gdb/Makefile.in
+	if test -e $(@D)/bfd/doc/Makefile.in ; then \
+		$(SED) 's/^INFO_DEPS =.*$$/INFO_DEPS =/' $(@D)/bfd/doc/Makefile.in ; \
+	fi
+	if test -e $(@D)/gprof/Makefile.in ; then \
+		$(SED) 's/^INFO_DEPS =.*$$/INFO_DEPS =/' $(@D)/gprof/Makefile.in ; \
+	fi
 endef
 GDB_PRE_CONFIGURE_HOOKS += GDB_DISABLE_DOC
 HOST_GDB_PRE_CONFIGURE_HOOKS += GDB_DISABLE_DOC