Add capability flag for low-latency support

This commit adds a flag for low latency support. This flag will be
checked when supported features are queried thorugh the HAL.

Bug: 34905427
Test: Unit test
Test: ./tests/wifitests/runtests.sh
Change-Id: I5cc5405ca0004c8ccea9f0b49c483936b5124d31

wifi/java/android/net/wifi/WifiManager.java

@@ -1982,6 +1982,8 @@ public class WifiManager {
     public static final int WIFI_FEATURE_WPA3_SUITE_B     = 0x10000000; // WPA3-Enterprise Suite-B
     /** @hide */
     public static final int WIFI_FEATURE_OWE              = 0x20000000; // Enhanced Open
+    /** @hide */
+    public static final int WIFI_FEATURE_LOW_LATENCY      = 0x40000000; // Low Latency modes
 
     private int getSupportedFeatures() {
         try {