pcb: rework pcb with correct footprints, add tvs diodes

Add TVS diodes, so we make sure they work.

Also, rework the PCB so that the clock actually functions now.

Signed-off-by: Sean Cross <sean@xobs.io>

hardware/pcb/tomu-fpga-cache.lib

@@ -19,6 +19,29 @@ X ~ 2 0 -100 80 U 50 50 1 1 P
 ENDDRAW
 ENDDEF
 #
+# Device:D_Small
+#
+DEF Device:D_Small D 0 10 N N 1 F N
+F0 "D" -50 80 50 H V L CNN
+F1 "Device:D_Small" -150 -80 50 H V L CNN
+F2 "" 0 0 50 V I C CNN
+F3 "" 0 0 50 V I C CNN
+$FPLIST
+ TO-???*
+ *SingleDiode
+ *_Diode_*
+ *SingleDiode*
+ D_*
+$ENDFPLIST
+DRAW
+P 2 0 1 0 -30 -40 -30 40 N
+P 2 0 1 0 -30 0 30 0 N
+P 4 0 1 0 30 -40 -30 0 30 40 30 -40 N
+X K 1 -100 0 70 R 50 50 1 1 P
+X A 2 100 0 70 L 50 50 1 1 P
+ENDDRAW
+ENDDEF
+#
 # Device:LED
 #
 DEF Device:LED D 0 40 Y N 1 F N