ISA ROM: Fix macro not being used [skip ci]

src/device/isarom.c

@@ -469,7 +469,7 @@ static const device_config_t isarom_quad_config[] = {
         .type           = CONFIG_FNAME,
         .default_string = NULL,
         .default_int    = 0,
-        .file_filter    = "ROM files (*.bin *.rom)|*.bin,*.rom",
+        .file_filter    = BIOS_FILE_FILTER,
         .spinner        = { 0 },
         .selection      = { },
         .bios           = { { 0 } }