Add the new RIL requests to start/stop network scan

The CL defines the RIL API including the methods and structs which will
be used start and stop the network scan.

Test: Telephony Sanity Test
Bug: 30954762

Change-Id: I18462bf4aa5e8a9497d5eb214d905e4e7c827a04
diff --git a/radio/1.1/IRadio.hal b/radio/1.1/IRadio.hal
index 44b08fe..b3e21e7 100644
--- a/radio/1.1/IRadio.hal
+++ b/radio/1.1/IRadio.hal
@@ -81,4 +81,22 @@
      */
     oneway setSimCardPower_1_1(int32_t serial, CardPowerState powerUp);
 
+    /**
+     * Starts a network scan
+     *
+     * @param serial Serial number of request.
+     * @param request Defines the radio networks/bands/channels which need to be scanned.
+     *
+     * Response function is IRadioResponse.startNetworkScanResponse()
+     */
+    oneway startNetworkScan(int32_t serial, NetworkScanRequest request);
+
+    /**
+     * Stops ongoing network scan
+     *
+     * @param serial Serial number of request.
+     *
+     * Response function is IRadioResponse.stopNetworkScanResponse()
+     */
+    oneway stopNetworkScan(int32_t serial);
 };