soc/tegra: cbb: Improve handling for per SoC fabric data

soc/tegra: cbb: Improve handling for per SoC fabric data

Improve handling for the per SoC fabrics and targets.
The below changes make them more flexible and ready for future SoC's.
- Added SoC prefix to Fabric_ID enums.
- Rename *lookup_target_timeout() to *sw_lookup_target_timeout() to
  make it separate from HW based lookup function to be added later.
- Moved target_map within fabric_lookup table to make it easy to
  check whether SW vs HW lookup is supported and handle accordingly.
- Slight improvements to some error prints.

Signed-off-by: Sumit Gupta <sumitg@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>