drm/plane: Add new plane property IN_FORMATS_ASYNC

There exists a property IN_FORMATS which exposes the plane supported
modifiers/formats to the user. In some platforms when asynchronous flip
are used all of modifiers/formats mentioned in IN_FORMATS are not
supported. This patch adds a new plane property IN_FORMATS_ASYNC to
expose the async flip supported modifiers/formats so that user can use
this information ahead and do flip with unsupported
formats/modifiers. This will save flip failures.
Add a new function pointer similar to format_mod_supported specifically
for asynchronous flip.

v2: Remove async variable from drm_plane (Ville)
v3: Add new function pointer for async (Ville)
v5: Typo corrected in commit message & some correction in the kernel
documentation. (Chaitanya)
v7: Place IN_FORMATS_ASYNC next to IN_FORMATS (Ville)
v8: replace uint32_t with u32 and uint64_t with u64 (Chaitanya)

Signed-off-by: Arun R Murthy <[email protected]>
Acked-by: Xaver Hugl <[email protected]>
Acked-by: Harry Wentland <[email protected]>
Reviewed-by: Chaitanya Kumar Borah <[email protected]>
Reviewed-by: Ville Syrjälä <[email protected]>
Tested-by: Naveen Kumar <[email protected]>
Signed-off-by: Suraj Kandpal <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

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