media: iris: Add support for ENUM_FMT, S/G/TRY_FMT encoder

media: iris: Add support for ENUM_FMT, S/G/TRY_FMT encoder

Add V4L2 format handling support for the encoder by adding
implementation of ENUM/S/G/TRY_FMT with necessary hooks.

This ensures that the encoder supports format negotiation consistent
with V4L2 expectation, enabling userspace applications to configure
resolution, pixel format and buffer layout properly.

Tested-by: Vikash Garodia <quic_vgarodia@quicinc.com> # X1E80100
Reviewed-by: Vikash Garodia <quic_vgarodia@quicinc.com>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550-HDK
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8650-HDK
Signed-off-by: Dikshita Agarwal <quic_dikshita@quicinc.com>
Tested-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org> # x1e80100-crd
Signed-off-by: Bryan O'Donoghue <bod@kernel.org>
Signed-off-by: Hans Verkuil <hverkuil+cisco@kernel.org>