drm/amdkfd: Implement wave control debugger IOCTL
drm/amdkfd: Implement wave control debugger IOCTL

v2:

- rename get_dbgmgr_mutex to kfd_get_dbgmgr_mutex to namespace it
- change void* to uint64_t inside ioctl arguments
- use kmalloc instead of kzalloc because we use copy_from_user
  immediately after it

Signed-off-by: Yair Shachar <87d3c99463a1577526b21fcdc0bbc41615067a81@amd.com>
Signed-off-by: Oded Gabbay <c2fce4493a16d94b58efb315151c29911fc5d347@gmail.com>

KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs