qcacld-3.0: Add check for passive channel for SAP

Add a check for passive channels when checking the restricted
bands on SAP. This change blocks SAP from restarting on a passive
channel.

Implement the function to filter out passive channels from the PCL.

Change-Id: I80a4b78c1af77f5bfa68be3163f9e9a78cc6425a
CRs-fixed: 2817589

core/sap/inc/sap_api.h

@@ -1505,6 +1505,19 @@ bool wlansap_is_6ghz_included_in_acs_range(struct sap_context *sap_ctx);
 uint32_t
 wlansap_get_safe_channel_from_pcl_and_acs_range(struct sap_context *sap_ctx);
 
+/**
+ * wlansap_get_safe_channel_from_pcl_for_sap() - Get safe and active channel
+ * for SAP restart
+ * @sap_ctx: sap context
+ *
+ * Get a safe and active channel to restart SAP. PCL already takes into account
+ * the unsafe channels.
+ *
+ * Return: Chan freq num to restart SAP in case of success. In case of any
+ * failure, the channel number returned is zero.
+ */
+uint32_t wlansap_get_safe_channel_from_pcl_for_sap(struct sap_context *sap_ctx);
+
 /**
  * wlansap_get_chan_band_restrict() -  get new chan for band change
  * @sap_ctx: sap context pointer