Rearrange opengl llndk libraries to be next to implementations

As an intermediate step towards removing llndk_library modules in
favor of using llndk properties in the cc_library directly, move the
llndk_library modules next to the cc_library modules so that the
paths in the llndk_library properites are correct when Soong copies
the properties into the cc_library module.

Bug: 170784825
Test: m checkbuild
Change-Id: I41674ad253b009d1cf528dc7b480676fb29edabd