Adds support for AllocateMemoryOnly inside XDNA driver.
Move the IsLocalMemory() check inside the KFD driver
since the XDNA driver can, and needs to, create handles
on system memory buffer objects.
Changed handle variable name from thunk_handle to user_mode_driver_handle,
which is more representative if we support non-GPU drivers.
Change-Id: I95db9d575afd1ab0ff2de74cea5175d9a12a721b
Tony Gutierrez
4bf102dc6b