qcacmn: Set default REO destination ring to SW4

For MDM platforms, set default REO destination
ring to SW4 for STA vdev, which is same as SAP vdev.

Note that RX hashing is still enabled for STA vdev.
Also REO destination are run-time remapped when IPA
automony is enabled and disabled.

Change-Id: I49fa523673e7b736008679adec55821e198e8417
CRs-Fixed: 2456786

dp/wifi3.0/dp_ipa.c

@@ -1727,4 +1727,16 @@ bool dp_ipa_rx_intrabss_fwd(struct cdp_vdev *pvdev, qdf_nbuf_t nbuf,
 	return true;
 }
 
+#ifdef MDM_PLATFORM
+bool dp_ipa_is_mdm_platform(void)
+{
+	return true;
+}
+#else
+bool dp_ipa_is_mdm_platform(void)
+{
+	return false;
+}
+#endif
+
 #endif