qcacld-3.0: Remove obsolete txrx.h

Almost all of the definitions in txrx.h are obsolete. Rather than
remove the obsolete definitions and leave behind a file containing
only the two definitions that are used, move those useful definitions
to ol_txrx_types.h and completely remove txrx.h.

A side effect of this change is that a couple of unrelated files no
longer build because some of their dependencies were being met as a
side effect by txrx.h including other files. To solve the build issues
explicitly include the necessary header files where they are needed.

Change-Id: Ic3e3b36939e4ab04831d41a1e230bfab3da086a2
CRs-Fixed: 2363231

ipa/core/src/wlan_ipa_core.c

@@ -23,6 +23,8 @@
 #include "cdp_txrx_ipa.h"
 #include "wal_rx_desc.h"
 #include "qdf_str.h"
+#include "sir_api.h"
+#include "host_diag_core_event.h"
 
 static struct wlan_ipa_priv *gp_ipa;