config: add a small_flash feature

this causes KALLSYMS to be off by default

Signed-off-by: John Crispin <john@phrozen.org>

scripts/target-metadata.pl

@@ -36,6 +36,7 @@ sub target_config_features(@) {
 		/mips16/ and $ret .= "\tselect HAS_MIPS16\n";
 		/rfkill/ and $ret .= "\tselect RFKILL_SUPPORT\n";
 		/low_mem/ and $ret .= "\tselect LOW_MEMORY_FOOTPRINT\n";
+		/small_flash/ and $ret .= "\tselect SMALL_FLASH\n";
 		/nand/ and $ret .= "\tselect NAND_SUPPORT\n";
 	}
 	return $ret;