demmt/nvrm: unk41.unk0c is the number of words pointed by ptr1/2/3
demmt/nvrm: nvrm_mthd_subdevice_fb_get_params does not actually have padding
demmt/nvrm: do not try to create object with handle == 0 from ioctl_memory
demmt: correctly track object handles used for method 0 on fermi+

Until now, when mapping object to subchannel, object handles were
guessed by using a value passed to method 0.
However, on Fermi+ method 0 accepts object "names", which can differ
from both classes and object handles. Blob uses special ioctl
(IOCTL_CALL/NVRM_MTHD_FIFO_IB_OBJECT_INFO) to get object name from
handle, so we need to parse it and update tracking info.