ide: coding style fixes for drivers/ide/setup-pci.c

* remove trailing whitespaces
* 'if()' -> 'if ()'
* remove extra new-line before EXPORT_SYMBOL_GPL()
* add extra new-line after 'id' definition
* respect 80-columns limit

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>