Bluetooth: controller: Move lll_sync_iso.h common to all vendors

Move lll_sync_iso.h as common to all vendors, as currently
there is nothing that is vendor specific.

Fixes #31044.

Signed-off-by: Vinayak Kariappa Chettimada <[email protected]>

Author: cvinayak

subsys/bluetooth/controller/ll_sw/nordic/lll/lll_sync_iso.h renamed to subsys/bluetooth/controller/ll_sw/lll_sync_iso.h

@@ -4,7 +4,6 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-
 struct lll_sync_iso {
 	struct lll_hdr hdr;
 	uint8_t is_enabled:1;