V4L/DVB (11797): xc5000: cleanup firmware loading messages

Make it a little more obvious in the dmesg output what is going on during
firmware upload.  This is more important for boards like the HVR-950q that
take nearly seven seconds to do the upload.

Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>