egl/surfaceless: Fix EGL_DEVICE_EXT implementation
What does this MR do and why?
The EGL_EXT_EXPLICIT_DEVICE implementation has some corner cases that have been exposed by piglit!840 .
egl/surfaceless: Fix EGL_DEVICE_EXT implementation
egl: Add _eglHasAttrib() function
egl/surfaceless: Disable software renderer if using EGL_DEVICE_EXT
Edited by Robert Foss