drm/i915: WARN if module opt sanitization goes out of order
drm/i915: WARN if module opt sanitization goes out of order

Depending upon one module option to be sanitized (through USES_PPGTT)
for the other is a bit too fragile for my taste. At least WARN about
this.

Cc: Ben Widawsky <73675debcd8a436be48ec22211dcf44fe0df0a64@bwidawsk.net>
Cc: Damien Lespiau <64bd3cb94f359c1a3ce68dae5e26b40578526277@intel.com>
Cc: Oscar Mateo <8d158a6e9567f59e489595fde938b03d223fe815@intel.com>
Signed-off-by: Daniel Vetter <c1b6782c4af8f0673da8923a0702a1832e5940f4@ffwll.ch>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs