panic options

[Robert Swindells <rjs%fdy2.co.uk@localhost>]

Is there any way to get panic(9) to behave differently in some places
than others?

There is a call to panic() if the kernel detects that there is no
console device found, I would like to make this call to it just reboot
without dropping into ddb.

The amdgpu driver fails to initialize about 9 times in 10 for me so
would like to reduce the amount of typing needed.