[media] lirc_bt829: Note in TODO why it can't be a normal PCI driver yet

Signed-off-by: Ben Hutchings <[e-mail]>
Signed-off-by: Mauro Carvalho Chehab <[e-mail]>

drivers/staging/media/lirc/TODO

···
   (see drivers/media/IR/mceusb.c vs. lirc_mceusb.c in lirc cvs for an
   example of a previously completed port).
 
+- lirc_bt829 uses registers on a Mach64 VT, which has a separate kernel
+  framebuffer driver (atyfb) and userland X driver (mach64).  It can't
+  simply be converted to a normal PCI driver, but ideally it should be
+  coordinated with the other drivers.
+
 Please send patches to:
 Jarod Wilson <[e-mail]>
 Greg Kroah-Hartman <[e-mail]>