android: include src/glsl/Makefile.sources

This also fixes the build error due to missing link_uniforms.cpp in the source
lists.

Reviewed-by: Brian Paul <brianp@vmware.com>
Reviewed-by: Chad Versace <chad@chad-versace.us>

[olv: the missing link_uniforms.cpp was added before this patch is committed]
1 file changed