Reduce cdfs ram

[fjtrujy]

Reducing the number of max folders and max files that can be opened at the same time in the CDFS driver.
This drastically reduces the amount of RAM wasted on this driver.

I plan to do a further refactor in the following PRs, but this is a a quick win for now.

Before:

================== RAM ====================
Symbol                   Size        %
===========================================
?                        613.1 KiB   100.00
  fod_table              584.2 KiB    95.28
  local_buffer.1          18.0 KiB     2.94
  dvdvBuffer               2.0 KiB     0.33
  cdVolDesc                2.0 KiB     0.33
  localVolDesc.1           2.0 KiB     0.33
  cacheInfoDir             1.0 KiB     0.17
  pathcopy.3               1.0 KiB     0.16
  pathname.5               1.0 KiB     0.16
  dirname.2                1.0 KiB     0.16
  fd_table               256.0 B       0.04
  tocEntry.0             146.0 B       0.02
  ext_list.0             129.0 B       0.02
  filename.4             129.0 B       0.02
  fio_ops                 68.0 B       0.01
  fod_used                64.0 B       0.01
  fd_used                 64.0 B       0.01
  fio_driver              20.0 B       0.00
  cdvdChangedMagicLast     8.0 B       0.00
  _irx_id                  8.0 B       0.00
  lastsector               4.0 B       0.00
  last_bk                  4.0 B       0.00
  cdReadMode               4.0 B       0.00
  cdvdChangedMagic         4.0 B       0.00
===========================================
Symbols total            613.1 KiB
===========================================

After:

================== RAM ====================
Symbol                   Size        %
===========================================
?                        174.6 KiB   100.00
  fod_table              146.0 KiB    83.66
  local_buffer.1          18.0 KiB    10.31
  dvdvBuffer               2.0 KiB     1.15
  cdVolDesc                2.0 KiB     1.15
  localVolDesc.0           2.0 KiB     1.15
  cacheInfoDir             1.0 KiB     0.59
  pathcopy.2               1.0 KiB     0.57
  pathname.4               1.0 KiB     0.57
  dirname.1                1.0 KiB     0.57
  tocEntry.0             146.0 B       0.08
  filename.3             129.0 B       0.07
  fio_ops                 68.0 B       0.04
  fd_table                64.0 B       0.04
  fio_driver              20.0 B       0.01
  fod_used                16.0 B       0.01
  fd_used                 16.0 B       0.01
  cdvdChangedMagicLast     8.0 B       0.00
  _irx_id                  8.0 B       0.00
  lastsector               4.0 B       0.00
  last_bk                  4.0 B       0.00
  cdReadMode               4.0 B       0.00
  cdvdChangedMagic         4.0 B       0.00
===========================================
Symbols total            174.6 KiB
===========================================

Cheers

[israpps]

Thanks. Will test with wLaunchELF 4.43_isr