qcacld-3.0: Fix -Wmissing-prototypes in lim_process_probe_rsp_frame

We want to enable the compiler's -Wmissing-prototypes switch, but
there is existing code that is generating warnings. Fix all warnings
in lim_process_probe_rsp_frame.

Change-Id: I0916219f8560c6e78d475cf94e6f048557d54384
CRs-Fixed: 1075090

core/mac/src/pe/lim/lim_process_probe_rsp_frame.c

@@ -60,7 +60,7 @@
  *
  * Return: 0 on success, one on failure
  */
-tSirRetStatus
+static tSirRetStatus
 lim_validate_ie_information_in_probe_rsp_frame(tpAniSirGlobal mac_ctx,
 				uint8_t *pRxPacketInfo)
 {