Explicitly align to 4k (#9041)

This is just for parity with what `clang` uses, it will align the
`libxamarin-app.so` library to a more natural boundary of 4k bytes
(size of a memory page on Android)

Author: grendello

src/Xamarin.Android.Build.Tasks/Tasks/LinkApplicationSharedLibraries.cs

@@ -129,6 +129,7 @@ IEnumerable<Config> GetLinkerConfigs ()
 				"-soname libxamarin-app.so " +
 				"-z relro " +
 				"-z noexecstack " +
+				"-z max-page-size=4096 " +
 				"--enable-new-dtags " +
 				"--build-id " +
 				"--warn-shared-textrel " +