intel_ips: Hush the i915 symbols message

We can't control order here, and getting it inverted is harmless.  So
turn this down to dev_info() and leave a note about how to fix it in
case userspace is insufficiently automagic.

Bugzilla: https://bugzilla.redhat.com/794953


Signed-off-by: Adam Jackson <ajax@redhat.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>