gstreamer1.0-plugins-base: Add version number into the name of bbappend file

The bbappend will only work on a specific version, or it may have some conflicts.
Currently, it is for GST 1.8.

And once the release is final, it does not update the Gstreamer version in poky.
So it won't raise the parser error.

Signed-off-by: Yuqing Zhu <carol.zhu@nxp.com>
Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>

diff --git a/recipes-multimedia/gstreamer/gstreamer1.0-plugins-base_%.bbappend b/recipes-multimedia/gstreamer/gstreamer1.0-plugins-base_1.8.%.bbappend
similarity index 100%
rename from recipes-multimedia/gstreamer/gstreamer1.0-plugins-base_%.bbappend
rename to recipes-multimedia/gstreamer/gstreamer1.0-plugins-base_1.8.%.bbappend