iwlwifi: mvm: BT Coex - add High Band retention

Tell the firmware if TTC should be enabled when switching
to High Band.
Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>

drivers/net/wireless/iwlwifi/mvm/coex.c

@@ -587,6 +587,8 @@ int iwl_send_bt_init_conf(struct iwl_mvm *mvm)
 			cpu_to_le32(BT_COEX_MPLUT_BOOST_ENABLED);
 	}
 
+	bt_cmd->enabled_modules |= cpu_to_le32(BT_COEX_HIGH_BAND_RET);
+
 	if (mvm->cfg->bt_shared_single_ant)
 		memcpy(&bt_cmd->decision_lut, iwl_single_shared_ant,
 		       sizeof(iwl_single_shared_ant));

drivers/net/wireless/iwlwifi/mvm/fw-api-coex.h

@@ -220,6 +220,7 @@ enum iwl_bt_coex_enabled_modules {
 	BT_COEX_MPLUT_BOOST_ENABLED	= BIT(1),
 	BT_COEX_SYNC2SCO_ENABLED	= BIT(2),
 	BT_COEX_CORUN_ENABLED		= BIT(3),
+	BT_COEX_HIGH_BAND_RET		= BIT(4),
 }; /* BT_COEX_MODULES_ENABLE_E_VER_1 */
 
 /**