accel/rocket: Add registers header

A XML file was generated with the data from the TRM, and then this
header was generated from it.

The canonical location for the XML file is the Mesa3D repository.

v3:
- Make use of GPL-2.0-only for the copyright notice (Jeff Hugo)

v8:
- Remove full MIT license blob, to match other files with the same
  licensing arrangement in the kernel

Reviewed-by: Robert Foss <rfoss@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
Signed-off-by: Tomeu Vizoso <tomeu@tomeuvizoso.net>
Signed-off-by: Jeff Hugo <jeff.hugo@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20250721-6-10-rocket-v9-1-77ebd484941e@tomeuvizoso.net