DPC++ daily 2022-09-14

[SYCL][DOC] Add extension for FPGA kernel interface properties (#5715)

## SYCL extension contains the following new kernel properties
- `streaming_interface<...>`
- `register_map_interface<...>`
The first two properties take enum arguments that provide the compiler
information about whether the logic downstream to the kernel will
back-pressure the kernel or not.
- `pipelined<N>`
Takes an integer, non-zero values specify minimum cycles between kernel
invocations, and 0 specifies that pipelining should be disabled.

Co-authored-by: GarveyJoe <joseph.garvey@intel.com>