Revert "Don't load level 0 twice for 1-level textures in DX11." and fix it properly.

All backend TextureCaches now load level 0 in CreateTexture.

This reverts commit 294cb165ba.

Source/Plugins/Plugin_VideoOGL/Src/TextureCache.cpp

@@ -178,6 +178,8 @@ TextureCache::TCacheEntryBase* TextureCache::CreateTexture(unsigned int width,
 	entry.pcfmt = pcfmt;
 
 	entry.bHaveMipMaps = tex_levels != 1;
+	
+	entry.Load(width, height, expanded_width, 0);
 
 	return &entry;
 }