binutils: inherit pkgconfig to address libdebuginfod depdency
Since libdebuginfo was default distro feature[1], cross build of binutils
has been broken due to absence of pkg-config. To find the dependency
properly, we should inherit pkgconfig bbclass.
checking for aarch64-poky-linux-pkg-config... no
checking for pkg-config... no
checking whether to use debuginfod... yes
checking for libdebuginfod >= 0.179... no
configure: error: "--with-debuginfod was given, but libdebuginfod is missing or unusable."
