RFC Async modifiers 'IN_FORMATS_ASYNC' support

[Santhosh Reddy Guddati]

The new rfc igt changes are wrt the below RFC implementation in KMD.
https://patchwork.freedesktop.org/series/141475/

The idea is to consume the new property exposed to user space and get
the list of supported async modifiers.

Santhosh Reddy Guddati (2):
  lib/igt_kms: Add support to retrieve async modifiers
  tests/kms_async_flips: use in_formats_async for async modifiers

 lib/igt_kms.c           | 39 ++++++++++++++++++++++++++++++++++++++-
 lib/igt_kms.h           |  7 ++++++-
 tests/kms_async_flips.c |  4 ++--
 3 files changed, 46 insertions(+), 4 deletions(-)

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2.34.1