[SYCL-MLIR][cgeist] Propagate SYCLKernelFuncObj attribute (#12347)
Attach `sycl.kernel_func_obj` attribute to functions with the
`SYCLKernelFuncObj` attribute. The list of symbols referring to the
kernels the function implements is obtained from the original attribute.
Signed-off-by: Victor Perez <victor.perez@codeplay.com>
