libztex: Make log messages say bitstream when refering to bitstreams

libztex.c

@@ -297,7 +297,7 @@ static int libztex_configureFpgaHS(struct libztex_device *ztex, const char* firm
 	for (tries = 3; tries > 0; tries--) {
 		fp = open_bitstream("ztex", firmware);
 		if (!fp) {
-			applog(LOG_ERR, "%s: failed to read firmware '%s'", ztex->repr, firmware);
+			applog(LOG_ERR, "%s: failed to read bitstream '%s'", ztex->repr, firmware);
 			return -2;
 		}
 
@@ -365,7 +365,7 @@ static int libztex_configureFpgaLS(struct libztex_device *ztex, const char* firm
 	for (tries = 10; tries > 0; tries--) {
 		fp = open_bitstream("ztex", firmware);
 		if (!fp) {
-			applog(LOG_ERR, "%s: failed to read firmware '%s'", ztex->repr, firmware);
+			applog(LOG_ERR, "%s: failed to read bitstream '%s'", ztex->repr, firmware);
 			return -2;
 		}