ide/macio: fix wrong opaque with TRIM support

Commit 215e47b9 enabled TRIM by default, which revealed a bug in TRIM
support for the IDE macio emulation driver, introduced in d353fb72.

The call to dma_bdrv_io() is using a wrong opaque of type IDEState
instead of DBDMA_io. This patch fixes that.

Fixes LP#1179104
Reported-by: NMichael Tokarev <mjt@tls.msk.ru>
Tested-off-by: NMichael Tokarev <mjt@tls.msk.ru>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

hw/ide/macio.c

@@ -144,7 +144,7 @@ static void pmac_ide_transfer_cb(void *opaque, int ret)
         break;
     case IDE_DMA_TRIM:
         m->aiocb = dma_bdrv_io(s->bs, &s->sg, sector_num,
-                               ide_issue_trim, pmac_ide_transfer_cb, s,
+                               ide_issue_trim, pmac_ide_transfer_cb, io,
                                DMA_DIRECTION_TO_DEVICE);
         break;
     }