gst-plugins-bad: Fix pkgconfig file issue

gst-plugins-bad: Fix pkgconfig file issue

pc files from this project could not be found when compiling other
packages using these pc files as BuildRequires.
As a result, some Tizen native packages could not be built well.
e.g.) capi-media-webrtc, capi-media-streamer

This issue is related to the meson version. See below.
https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/3061

It is fixed as per the current circumstance of Tizen dev.

Change-Id: Iad46fa21d87416b4b3bec0d90f538dfff74a83d1