Print more information in arm_dump_tdep
    
    I am keeping the (int) casts because a future patch will change the type
    to bool.
    
    gdb/ChangeLog:
    
    2020-02-12  Christian Biesinger  <cbiesinger@google.com>
    
    	* arm-tdep.c (arm_dump_tdep): Print more fields of tdep.