MainAndroid: Allow specifying savestate to load at boot

Source/Android/app/src/main/java/org/dolphinemu/dolphinemu/NativeLibrary.java

@@ -336,6 +336,11 @@ public final class NativeLibrary
 	 */
 	public static native void Run(String path);
 
+	/**
+	 * Begins emulation from the specified savestate.
+	 */
+	public static native void Run(String path, String savestatePath);
+
 	// Surface Handling
 	public static native void SurfaceChanged(Surface surf);
 	public static native void SurfaceDestroyed();