ide: make wait_drive_not_busy() static again

After commit 7267c3377443322588cddaf457cf106839a60463 
wait_drive_not_busy() can become static again.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2 files changed