ata: printf on every spinup/spindown?

I am playing with ata spindown feature and I think that it is really unnecessary
to print a message each time ata driver is going to spindown a disk or let it be
spinned up:
ad6: Idle, spin down
ad6: request while spun down, starting.
ad6: drive spun down.
ad6: Idle, spin down
ad6: request while spun down, starting.

Especially this is not useful when "Idle, spin down" messages are going spin up
the disk via syslog logging to disk :-)

Maybe put these under verboseboot if not drop entirely?

-- 
Andriy Gapon