bootstage: Do not sort records

bootstage: Do not sort records

The timer counter on Rockchip SoCs may be reset in TF-A, this may cause
the bootstage records to be printed out of order and with an incorrect
elapsed time.

Fix this by not sorting the bootstage records.

Before on a Radxa ZERO 3W (RK3566) board:

  => bootstage report
  Timer summary in microseconds (12 records):
         Mark    Elapsed  Stage
            0          0  reset
        7,436      7,436  board_init_f
      164,826    157,390  SPL
      375,392    210,566  end phase
      423,909     48,517  board_init_r
      472,973     49,064  eth_common_init
      476,848      3,875  main_loop
      477,003        155  cli_loop

  Accumulated time:
                   7,181  of_live
                  14,739  dm_spl
                  15,029  dm_r
                 315,150  dm_f

With this the records can be printed in chronological order when the
counter is reset and SPL and board_init_r records show correct elapsed
time.

  => bootstage report
  Timer summary in microseconds (12 records):
         Mark    Elapsed  Stage
            0          0  reset
      164,437    164,437  SPL
      375,023    210,586  end phase
        7,437      7,437  board_init_f
      424,390    416,953  board_init_r
      473,515     49,125  eth_common_init
      477,402      3,887  main_loop
      477,571        169  cli_loop

  Accumulated time:
                  14,734  dm_spl
                 315,646  dm_f
                   7,339  of_live
                  14,977  dm_r

For the tested board external TPL and BROM take ~164 ms to initialize
DRAM and load SPL, SPL take ~210ms to load images from FIT and U-Boot
proper take ~477ms to reach cli prompt.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>