egl: expose EGLimage extensions

Add EGL_KHR_gl_texture_cubemap_image and EGL_KHR_gl_renderbuffer_image
to the static EGL extension string since these require no new APIs
beyond what is already required.

Change-Id: I2d1fde86b19bb9eee46b3b977f51784a17cfcc3c
1 file changed