Convert ShaderHostConfig to BitField

Source/Core/VideoCommon/ShaderCache.cpp

@@ -35,7 +35,7 @@ ShaderCache::~ShaderCache()
 bool ShaderCache::Initialize()
 {
   m_api_type = g_ActiveConfig.backend_info.api_type;
-  m_host_config = ShaderHostConfig::GetCurrent();
+  m_host_config.bits = ShaderHostConfig::GetCurrent().bits;
 
   if (!CompileSharedPipelines())
     return false;