Add support for AV1D Intra-Block Copy (IBC) feature. This requires a
dedicated internal buffer (HFI_BUFFER_IBC_AV1D), which was previously
part of LINE buffer. A new internal buffer type called
HFI_BUFFER_PARTIAL_DATA is introduced, and this buffer type holds
HFI_BUFFER_IBC_AV1D for AV1D. HFI_BUFFER_PARTIAL_DATA is mapped to
NON_SECURE_PIXEL context bank for non-secure and to SECURE_PIXEL
context bank for secure use case.
Change-Id: If7ae22495f9981f275d54acc342c25ccdfc0c7b9
Signed-off-by: Mihir Ganu <quic_mganu@quicinc.com>