ide: factor out reset error reporting from reset_pollfunc()

Factor out reset error reporting from reset_pollfunc()
to ide_reset_report_error() helper.

While at it:
- fix KERN_* printk() levels
- remove 'switch ()'

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>