Add the fet12 PCBs

These are the files as I sent them off to be made.

Change-Id: Icd3534fbd8c512670484bcfb6fa81b8cd9c45cf1
diff --git a/motors/big_schematic/fet12.gsch2pcb b/motors/big_schematic/fet12.gsch2pcb
index c76c4e1..fe24545 100644
--- a/motors/big_schematic/fet12.gsch2pcb
+++ b/motors/big_schematic/fet12.gsch2pcb
@@ -1,3 +1,3 @@
-schematics fet12-main.sch
+schematics fet12-main.sch fet12-power-12v.sch fet12-power-5v.sch
 output-name fet12
 use-files