accel/amdxdna: Improve tracing for job lifecycle and mailbox RX worker

accel/amdxdna: Improve tracing for job lifecycle and mailbox RX worker

Add more trace coverage to amdxdna job handling and mailbox receive
processing to make driver execution easier to debug.

Extend the xdna_job trace event to record the command opcode in
addition to the job sequence number. Use the enhanced tracepoint in
the job run, sent-to-device, signaled-fence, and job-free paths so
that trace output can be correlated with the command being executed.

Also add debug-point tracing when a command is received through the
submit ioctl path, and add a trace event when the mailbox RX worker
runs.

These changes improve visibility into job lifetime transitions and
mailbox activity, which helps debug command flow and scheduler issues.

Signed-off-by: Max Zhen <max.zhen@amd.com>
Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>
Signed-off-by: Lizhi Hou <lizhi.hou@amd.com>
Link: https://patch.msgid.link/20260421181502.1970263-1-lizhi.hou@amd.com