gstreamer1.0-plugins-bad: resolve opencv pkg-config in meson build
When opencv is picked in PACKAGECONFIG, plugin fails to locate data
dirs. This is due to meson.build file uses 'test' utility to verify that
the data dirs path is present and not taking sysroot into prefix.
Introduce additional patch, which picks up PKG_CONFIG_SYSROOT_DIR as
prefix for 'test' utility to verify the data dir is actually present.
Signed-off-by: Andrey Zhizhikin <andrey.z@gmail.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
