wifi: Get the supported radio combinations matrix

Added API to get the supported radio combinations
of the chip. This is mainly to check if the chip is
capable of multi band simultaneous operation.

For Example in case of a chip which has two radios, where one radio is
capable of 2.4GHz 2X2 only and another radio which is capable of either
5GHz or 6GHz 2X2, number of possible radio combinations in this case
are 5 and possible combinations are
    {{{2G 2X2}}, //Standalone 2G
    {{5G 2X2}}, //Standalone 5G
    {{6G 2X2}}, //Standalone 6G
    {{2G 2X2}, {5G 2X2}}, //2G+5G DBS
    {{2G 2X2}, {6G 2X2}}} //2G+6G DBS

Bug: 208877624
Test: unit test
Change-Id: I4c90f80002ca138133a575bca80dfdef2a593ab2

include/hardware_legacy/wifi_hal.h

@@ -225,6 +225,50 @@ typedef enum {
     WIFI_ACCESS_CATEGORY_VOICE = 3
 } wifi_access_category;
 
+/* Antenna configuration */
+typedef enum {
+  WIFI_ANTENNA_UNSPECIFIED = 0,
+  WIFI_ANTENNA_1X1         = 1,
+  WIFI_ANTENNA_2X2         = 2,
+  WIFI_ANTENNA_3X3         = 3,
+  WIFI_ANTENNA_4X4         = 4,
+} wifi_antenna_configuration;
+
+/* Wifi Radio configuration */
+typedef struct {
+    /* Operating band */
+    wlan_mac_band band;
+    /* Antenna configuration */
+    wifi_antenna_configuration antenna_cfg;
+} wifi_radio_configuration;
+
+/* WiFi Radio Combination  */
+typedef struct {
+    u32 num_radio_configurations;
+    wifi_radio_configuration radio_configurations[];
+} wifi_radio_combination;
+
+/* WiFi Radio combinations matrix */
+/* For Example in case of a chip which has two radios, where one radio is
+ * capable of 2.4GHz 2X2 only and another radio which is capable of either
+ * 5GHz or 6GHz 2X2, number of possible radio combinations in this case
+ * are 5 and possible combinations are
+ *                            {{{2G 2X2}}, //Standalone 2G
+ *                            {{5G 2X2}}, //Standalone 5G
+ *                            {{6G 2X2}}, //Standalone 6G
+ *                            {{2G 2X2}, {5G 2X2}}, //2G+5G DBS
+ *                            {{2G 2X2}, {6G 2X2}}} //2G+6G DBS
+ * Note: Since this chip doesn’t support 5G+6G simultaneous operation
+ * as there is only one radio which can support both, So it can only
+ * do MCC 5G+6G. This table should not get populated with possible MCC
+ * configurations. This is only for simultaneous radio configurations
+ * (such as Standalone, multi band simultaneous or single band simultaneous).
+ */
+typedef struct {
+    u32 num_radio_combinations;
+    /* Each row represents possible radio combinations */
+    wifi_radio_combination radio_combinations[];
+} wifi_radio_combination_matrix;
 
 /* Initialize/Cleanup */
 
@@ -919,6 +963,19 @@ typedef struct {
      */
     wifi_error (*wifi_set_indoor_state)(wifi_handle handle, bool isIndoor);
 
+    /**@brief wifi_get_supported_radio_combinations_matrix
+     *        Request all the possible radio combinations this device can offer.
+     * @param handle global wifi_handle
+     * @param max_size maximum size allocated for filling the wifi_radio_combination_matrix
+     * @param wifi_radio_combination_matrix to return all the possible radio
+     *        combinations.
+     * @param size actual size of wifi_radio_combination_matrix returned from
+     *        lower layer
+     *
+     */
+    wifi_error (*wifi_get_supported_radio_combinations_matrix)(
+        wifi_handle handle, u32 max_size, u32 *size,
+        wifi_radio_combination_matrix *radio_combination_matrix);
     /*
      * when adding new functions make sure to add stubs in
      * hal_tool.cpp::init_wifi_stub_hal_func_table