[linux-vr-cvsupdate] Update to module linux

[Michael K. <mf...@us...>]

Update of /cvsroot/linux-vr/linux/drivers/video
In directory slayer.i.sourceforge.net:/tmp/cvs-serv6511/drivers/video

Modified Files:
	vrc4171fb.c 
Log Message:
Add some diagnostic code to determine if a VRC4171(A) chip is really present.
Eventually, the driver just won't register the frame buffer if no ichip found.