Bugfix: modminer: Bitstream binary filenames are *.bit

*.ncd is for the source code

bitstreams/COPYING_fpgaminer

@@ -1,4 +1,4 @@
-All the bitstream files included in this directory that follow the name pattern fpgaminer_*.ncd are:
+All the bitstream files included in this directory that follow the name pattern fpgaminer_*.bit are:
 
 ----
 

driver-modminer.c

@@ -17,7 +17,7 @@
 #include "miner.h"
 #include "fpgautils.h"
 
-#define BITSTREAM_FILENAME "fpgaminer_top_fixed7_197MHz.ncd"
+#define BITSTREAM_FILENAME "fpgaminer_top_fixed7_197MHz.bit"
 #define BISTREAM_USER_ID "\2\4$B"
 #define MODMINER_MINIMUM_CLOCK  178
 #define MODMINER_DEFAULT_CLOCK  200