Revert "[media] media: Init the reserved fields of struct media_link_desc"

Reverting this commit to pull in the upstream version of this fix.
It'll make future kernel migrations easier.

This reverts commit e28d05092ee29d31c27e273bc9ccbc2bc3c49e1c.

Change-Id: Iab08f6c239cde9d59ed025cb68cbf233b777a614
Signed-off-by: Deva Ramasubramanian <dramasub@codeaurora.org>
diff --git a/drivers/media/media-device.c b/drivers/media/media-device.c
index 4f39838..6f9eb94 100644
--- a/drivers/media/media-device.c
+++ b/drivers/media/media-device.c
@@ -139,7 +139,7 @@
 		unsigned int p;
 
 		for (p = 0; p < entity->num_pads; p++) {
-			struct media_pad_desc pad = {0};
+			struct media_pad_desc pad;
 			media_device_kpad_to_upad(&entity->pads[p], &pad);
 			if (copy_to_user(&links.pads[p], &pad, sizeof(pad)))
 				return -EFAULT;