ide: NULL noise: drivers/ide/ide-*.c

Fix this sparse warnings:
  drivers/ide/ide-disk_proc.c:130:11: warning: Using plain integer as NULL pointer
  drivers/ide/ide-floppy_proc.c:32:11: warning: Using plain integer as NULL pointer
  drivers/ide/ide-proc.c:234:11: warning: Using plain integer as NULL pointer
  drivers/ide/ide-tape.c:2141:11: warning: Using plain integer as NULL pointer

Signed-off-by: Hannes Eder <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: Al Viro <[email protected]>
Signed-off-by: Bartlomiej Zolnierkiewicz <[email protected]>
diff --git a/drivers/ide/ide-proc.c b/drivers/ide/ide-proc.c
index 1d8978b3..a7b9287 100644
--- a/drivers/ide/ide-proc.c
+++ b/drivers/ide/ide-proc.c
@@ -231,7 +231,7 @@
 	IDE_PROC_DEVSET(pio_mode, 0, 255),
 	IDE_PROC_DEVSET(unmaskirq, 0, 1),
 	IDE_PROC_DEVSET(using_dma, 0, 1),
-	{ 0 },
+	{ NULL },
 };
 
 static void proc_ide_settings_warn(void)