eglmesaext: add new enums for EGL_MESA_drm_image_formats
eglmesaext: add new enums for EGL_MESA_drm_image_formats

Reviewed-by: Eric Engestrom <de0b63cf2dfb1fae8ed3c3b4244856a05677d4f0@imgtec.com>

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler