Vulkan/OpenGL: log dlerror for loading updatable gfx driver

Test: build
Change-Id: Ifcb57266f5d93767ba911f70695e0bbbeace98e6
diff --git a/libs/graphicsenv/GraphicsEnv.cpp b/libs/graphicsenv/GraphicsEnv.cpp
index 55c5de9..d54de49 100644
--- a/libs/graphicsenv/GraphicsEnv.cpp
+++ b/libs/graphicsenv/GraphicsEnv.cpp
@@ -548,7 +548,7 @@
 }
 
 // Return true if all the required libraries from vndk and sphal namespace are
-// linked to the Game Driver namespace correctly.
+// linked to the updatable gfx driver namespace correctly.
 bool GraphicsEnv::linkDriverNamespaceLocked(android_namespace_t* vndkNamespace) {
     const std::string llndkLibraries = getSystemNativeLibraries(NativeLibrary::LLNDK);
     if (llndkLibraries.empty()) {