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/ProcessExposed.h

@@ -138,7 +138,7 @@ public:
 protected:
     virtual bool acquire_link(KBufferBuilder& builder) = 0;
     explicit ProcFSExposedLink(StringView name);
-    mutable Mutex m_lock { "ProcFSLink" };
+    mutable Mutex m_lock { "ProcFSLink"sv };
 };
 
 namespace PCI {