egl: add test for EGL_EXT_device_query_pci
Modeled after egl_mesa_device_software
Firefox requested to have a way to query the device's vendor PCI ID and device PCI ID, so here's an extension that adds this.
Cross-references:
- spec
- libglvnd ext addition
- Mesa implementation
- implementation test (here)
/cc @rmader
Edited by Jordan Justen