qcacld-3.0: Override phy mode in sap roaming profile

Wlan phy mode in sap roaming profile will become invalid when
the following corner case happens:

  1) sta starts in 5G channel x;
  2) sap starts in 5G channel y, leading to mcc;
  3) sap moves to 2.4G band on the other mac;

In the above case, sap channel frequency will be set to 2.4G,
but the phy mode in its roaming profile will not change.

Override the sap phy mode in its roaming profile so it aligns
with channel frequency again.

Change-Id: I0b243c1d312f77bf4a4d782f6b9d0d75928d0277
CRs-Fixed: 2736429

core/sap/src/sap_fsm.c

@@ -2240,6 +2240,9 @@ static QDF_STATUS sap_goto_starting(struct sap_context *sap_ctx,
 	     sap_ctx->csr_roamProfile.phyMode ==
 					eCSR_DOT11_MODE_11g_ONLY))
 		sap_ctx->csr_roamProfile.phyMode = eCSR_DOT11_MODE_11a;
+	else if (WLAN_REG_IS_24GHZ_CH_FREQ(sap_ctx->chan_freq) &&
+		 (sap_ctx->csr_roamProfile.phyMode == eCSR_DOT11_MODE_11a))
+		sap_ctx->csr_roamProfile.phyMode = eCSR_DOT11_MODE_11g;
 
 	/*
 	 * Transition from SAP_INIT to SAP_STARTING