qt5: add license file hashes for all submodules

qt5: add license file hashes for all submodules

Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
Reviewed-by: Peter Seiderer <ps.report@gmx.net>
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Changes v2 --> v3:
  - use 'Hashes for license files:' instead of repeated
    'Hash for license file' (suggested by Thomas Petazzoni)

Changes v2:
  - add reviewed-by and minor commit title change (removed package prefix)
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>