models/*: (1/3) back to parallel CORDIC for ease timing

The 35 and 1120 clock enables would give plenty
of time for TBT and FOFB CORDICs to stabilize,
easing timing closure
hdl/*/*/generated/virtex6/*: (2/3) back to parallel CORDIC for ease timing

The 35 and 1120 clock enables would give plenty
of time for TBT and FOFB CORDICs to stabilize,
easing timing closure
hdl/*/*/generated/artix7/*: (3/3) back to parallel CORDIC for ease timing

The 35 and 1120 clock enables would give plenty
of time for TBT and FOFB CORDICs to stabilize,
easing timing closure