fpga: .svf file to force a FPGA reconfiguration

Minimal hand-written (but seems to work!) .svf file for triggering
FPGA reconfiguration after modifying the SPI flash.

fpga/reconfig.svf

@@ -0,0 +1,13 @@
+! SVF file for making EP4CE15 (probably "any" Altera SRAM FPGA)
+! force a reconfiguration from its default configuration source
+
+FREQUENCY 1.20E+07 HZ;
+
+TRST ABSENT;
+ENDDR IDLE;
+ENDIR IRPAUSE;
+STATE IDLE;
+SIR 10 TDI (001);
+RUNTEST IDLE 12000 TCK ENDSTATE IDLE;
+SIR 10 TDI (3FF);
+RUNTEST IDLE 12000 TCK ENDSTATE IDLE;