RTEMS | bsps/arm/tms570: obsolete DMA BER mapping fields in reg_dma.h (#5626)

Wed Jun 17 09:27:15 UTC 2026

Avi Weiss created an issue: https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5626

## Summary
The shared TMS570 DMA header still exposes obsolete/deleted BER interrupt mapping fields.  

The current header includes:
```c
  uint32_t BERMAP;            /*BER Interrupt Mapping Register*/
  ...
  uint32_t BERAOFFSET;        /*BERA Interrupt Channel Offset Register*/
  ...
  uint32_t BERBOFFSET;        /*BERB Interrupt Channel Offset Register*/
```

Those are now deleted for both variants:  
![image](/uploads/e6715ea6af741166f959b69eeb0050c9/image.png){width=900 height=71}

## Expected behaviour
Delete those struct members, replace with padding. Remove access macros as well.

-- 
View it on GitLab: https://gitlab.rtems.org/rtems/rtos/rtems/-/issues/5626
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