qcacmn: Rename hif_callbacks and remove unwanted header files in source files

Rename hif_callbacks structure to hif_driver_state_callbacks and remove
get_monotonic callback and use qdf API to get monotonic time.

Remove following unwanted header files in the hif source files.
osdep.h, athdefs.h, a_types.h, osapi_linux.h.

Change-Id: Ib7a03cab1b056a33b39247989fa3dfca41c85f77
CRs-Fixed: 967765

htc/htc_packet.h

@@ -29,7 +29,6 @@
 #define HTC_PACKET_H_
 
 #include <osdep.h>
-#include <a_types.h>            /* A_UINT16, etc. */
 #include "dl_list.h"
 
 /* ------ Endpoint IDS ------ */