partitionmanager: boost performance during analysis

This phase requires a high CPU frequency to perform well, but the
loading conditions are such that many governors get fooled. Allow
devices to force themselves to full performance during this stage
for faster bootup.

Change-Id: Idbf9606d913c6aef25f39f633a0f42d88fbad19a

Author: sultanqasim

partitionmanager.cpp

@@ -1488,6 +1488,7 @@ void TWPartitionManager::Update_System_Details(void) {
 	int data_size = 0;
 
 	gui_msg("update_part_details=Updating partition details...");
+	TWFunc::SetPerformanceMode(true);
 	for (iter = Partitions.begin(); iter != Partitions.end(); iter++) {
 		(*iter)->Update_Size(true);
 		if ((*iter)->Can_Be_Mounted) {
@@ -1547,6 +1548,7 @@ void TWPartitionManager::Update_System_Details(void) {
 			}
 		}
 	}
+	TWFunc::SetPerformanceMode(false);
 	gui_msg("update_part_details_done=...done");
 	DataManager::SetValue(TW_BACKUP_DATA_SIZE, data_size);
 	string current_storage_path = DataManager::GetCurrentStoragePath();