Everywhere: Add sv suffix to strings relying on StringView(char const*)

Each of these strings would previously rely on StringView's char const*
constructor overload, which would call __builtin_strlen on the string.
Since we now have operator ""sv, we can replace these with much simpler
versions. This opens the door to being able to remove
StringView(char const*).

No functional changes.

Kernel/Random.cpp

@@ -73,7 +73,7 @@ void KernelRng::wait_for_entropy()
     SpinlockLocker lock(get_lock());
     if (!is_ready()) {
         dbgln("Entropy starvation...");
-        m_seed_queue.wait_forever("KernelRng");
+        m_seed_queue.wait_forever("KernelRng"sv);
     }
 }