[packages] gstreamer: Enable debugging and add gst_log2_debug symbol


git-svn-id: svn://svn.openwrt.org/openwrt/packages@35223 3c298f89-4303-0410-b956-a3cf2f4a3e73
[packages] gst-plugins-base: Add debugging info


git-svn-id: svn://svn.openwrt.org/openwrt/packages@35224 3c298f89-4303-0410-b956-a3cf2f4a3e73
[packages] gst-plugins: Add debugging information


git-svn-id: svn://svn.openwrt.org/openwrt/packages@35225 3c298f89-4303-0410-b956-a3cf2f4a3e73