Import query structures.
demmt/nvrm: decode known ioctl queries
NV0x -> NVx.
NV* -> GK*, GM*
NV* -> GF*
NVA[358F] -> GT21x/MCP89
NVxx -> G8x/G9x/G200/MCP7x
NV50 -> G80
NV4x -> G7x, MCPxx, NV44A.
docs: Nuke classes.rst [redundant with the list in graph/intro]
Clean up obj classes.
Nuke redundant NVRM classes.
docs: FIFO engines have moved on GK208+...
nvrm: Clean up fifo classes.
pdisplay: Add GM107 display class.
PVDEC -> PPDEC, Add actual GM107 PVDEC.
docs: GM107 PVENC.
Some new falcon stuff.
PCRYPT3 -> PSEC, add info about GM107 recycling
PCRYPT2 -> PCIPHER