media: venus: hfi: Define additional 6xx registers

- Add X2 RPMh registers and definitions from the downstream example.
- Add 6xx core power definitions
- Add 6xx AON definitions
- Add 6xx wrapper tz definitions
- Add 6xx wrapper interrupt definitions
- Add 6xx soft interrupt definitions
- Define wrapper LPI register offsets

Signed-off-by: Dikshita Agarwal <dikshita@codeaurora.org>
Co-developed-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Stanimir Varbanov <stanimir.varbanov@linaro.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>