iwl-trans: move dev_cmd_offs, page_offs to a common trans header

dev_cmd_offs, page_offs field is not directly related to the PCIe
transport, so move the structures it uses to the common iwl-trans.h header.

Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20200926002540.83b41765961f.Icd12bfb2a736ccf4cbe080973c746fb70a3c4a50@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/iwl-trans.h

@@ -914,6 +914,8 @@ struct iwl_txq {
  * struct iwl_trans_txqs - transport tx queues data
  *
  * @bc_table_dword: true if the BC table expects DWORD (as opposed to bytes)
+ * @page_offs: offset from skb->cb to mac header page pointer
+ * @dev_cmd_offs: offset from skb->cb to iwl_device_tx_cmd pointer
  * @queue_used - bit mask of used queues
  * @queue_stopped - bit mask of stopped queues
  */
@@ -924,6 +926,8 @@ struct iwl_trans_txqs {
 	struct dma_pool *bc_pool;
 	size_t bc_tbl_size;
 	bool bc_table_dword;
+	u8 page_offs;
+	u8 dev_cmd_offs;
 
 	struct {
 		u8 fifo;