i915/gvt: Separate the MMIO tracking table from GVT-g

i915/gvt: Separate the MMIO tracking table from GVT-g

To support the new mdev interfaces and the re-factor patches from
Christoph, which moves the GVT-g code into a dedicated module, the GVT-g
MMIO tracking table needs to be separated from GVT-g.

v9:
- Fix a problem might cause kernel panic.
- Remove the redaundant definitation of intel_get_device_type(). (Jani)
- Sort the list of header reference in intel_gvt_mmio.c (Jani)
- Include minimum header insted in intel_gvt_mmio.c (Jani)

v8:
- Use SPDX header in the intel_gvt_mmio_table.c
- Reference the gvt.h with path. (Jani)
- Add a missing fix on mmio emulation path during the debug.
- Fix a building problem on refreshed gvt-staging branch. (Christoph)

v7:
- Keep the marcos of device generation in GVT-g. (Christoph, Jani)

v6:
- Move the mmio_table.c into i915. (Christoph)
- Keep init_device_info and related structures in GVT-g. (Christoph)
- Refine the callbacks of the iterator. (Christoph)
- Move the flags of MMIO register defination to GVT-g. (Chrsitoph)
- Move the mmio block handling to GVT-g.

v5:
- Re-design the mmio table framework. (Christoph)

v4:
- Fix the errors of patch checking scripts.

v3:
- Fix the errors when CONFIG_DRM_I915_WERROR is turned on. (Jani)

v2:
- Implement a mmio table instead of generating it by marco in i915. (Jani)

Cc: Christoph Hellwig <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
Cc: Jani Nikula <[email protected]>
Cc: Joonas Lahtinen <[email protected]>
Cc: Vivi Rodrigo <[email protected]>
Cc: Zhenyu Wang <[email protected]>
Cc: Zhi Wang <[email protected]>
Signed-off-by: Zhi Wang <[email protected]>
Reviewed-by: Christoph Hellwig <[email protected]>
Tested-by: Christoph Hellwig <[email protected]>
Reviewed-by: Zhenyu Wang <[email protected]>
Acked-by: Jani Nikula <[email protected]>
Link: http://patchwork.freedesktop.org/patch/msgid/[email protected]