qcacmn: Change WMI API's event_buf length type to uint32_t

Change all the WMI API's event buf length param to
uint32_t to adjust to event buf length param type
in the wmi_unified_event_handler().These changes are
needed to converge on the common service ready handlers.

Change-Id: I553bab579f514c356b59b003c0ec66c17e60e26f
CRs-Fixed: 1110768

wmi_unified_api.c

@@ -4829,7 +4829,7 @@ QDF_STATUS wmi_ready_extract_mac_addr(void *wmi_hdl, void *ev, uint8_t *macaddr)
  * Return: length
  */
 uint8_t *wmi_extract_dbglog_data_len(void *wmi_hdl, void *evt_buf,
-			uint16_t *len)
+			uint32_t *len)
 {
 	wmi_unified_t wmi_handle = (wmi_unified_t) wmi_hdl;