qcacmn: Fix wmissing-prototype errors (dp_reo.c)

include dp_internal.h for its prototypes.

Change-Id: I0992d2b14d559a0e641ded52cc74e8fe2434c5e6
CRs-Fixed: 1115552

dp/wifi3.0/dp_reo.c

@@ -18,6 +18,7 @@
 
 #include "dp_types.h"
 #include "hal_reo.h"
+#include "dp_internal.h"
 
 QDF_STATUS dp_reo_send_cmd(struct dp_soc *soc, enum hal_reo_cmd_type type,
 		     struct hal_reo_cmd_params *params,