ide: move ->failed_pc to ide_drive_t

Move ->failed_pc from struct ide_{disk,tape}_obj to ide_drive_t.

There should be no functional changes caused by this patch.

Acked-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

include/linux/ide.h

@@ -609,6 +609,9 @@ struct ide_drive_s {
 	/* current packet command */
 	struct ide_atapi_pc *pc;
 
+	/* last failed packet command */
+	struct ide_atapi_pc *failed_pc;
+
 	/* callback for packet commands */
 	void (*pc_callback)(struct ide_drive_s *, int);