Update to TP pt lut reading for timing

[jasonfan393]

PR updates the pt LUT reading in disk/overlap TP, using ternary operators instead of a switch. This brings timing for overlap TPs more in line with barrel TPs.

HLS timing estimate for L1D1C: 4.596ns -> 3.465ns.

Edit: Added an odd hack in L3L4 TP, to reduce LUT usage. stubptouter LUT is read in a similar manner to the overlap/disks, which greatly reduces LUTs for some reason.

Edit 2: removed the hack and replaced with simple fix to the pt lut sizes - produces even better results in terms of resources and timing

table of resource/timing in affected modules post implementation: Current:	CLB	LUT	FF	DSP	BRAM	SRL	synth timing	impl timing
D1D2C	890	3516	5499	52	14	107	3.294	3.797
D3D4C	760	3013	4926	44	14	117	3.301	3.753
L1D1C	890	3596	5245	42	8	159	3.322	3.774
L3L4C	1427	6207	5481	62	8	142	3.48	3.696
L2D1C	787	3223	4735	44	8	126	3.329	3.888
PR:
D1D2C	863	3424	5507	52	6	107	3.294	3.74
D3D4C	752	2999	4934	44	6	117	3.301	3.98
L1D1C	940	3646	5091	42	8	158	3.322	3.693
L2D1C	764	3171	4686	44	8	125	3.329	3.819
L3L4C	1029	4388	5473	62	8	142	3.48	3.709