vk: Restore thread safety locks to descriptor routines

rpcs3/Emu/RSX/VK/VKProgramPipeline.cpp

@@ -559,7 +559,7 @@ namespace vk
 			};
 
 			{
-				//std::lock_guard lock(m_descriptor_set);
+				std::lock_guard lock(m_descriptor_set);
 				const bool cache_is_valid = m_descriptor_template_cache_id == m_descriptor_set.cache_id();
 
 				for (unsigned i = 0; i < m_descriptor_slots.size(); ++i)

rpcs3/Emu/RSX/VK/vkutils/descriptors.cpp

@@ -465,7 +465,7 @@ namespace vk
 			return;
 		}
 
-		//std::lock_guard lock(m_storage_lock);
+		std::lock_guard lock(m_storage_lock);
 
 		const auto num_writes = ::size32(m_pending_writes);
 		const auto num_copies = ::size32(m_pending_copies);