chore(scripts): allow custom input header path in generate-ecodes

Author: haithium

scripts/generate-ecodes.lua

@@ -3,7 +3,7 @@
 local fmt = string.format
 local concat = table.concat
 
-local input = "/usr/include/linux/input-event-codes.h"
+local input = arg[1] or "/usr/include/linux/input-event-codes.h"
 local generated_from = fmt("-- Generated by %q from %q", arg[0], input)
 
 ---@type {ABS:{},BTN:{},EV:{},INPUT_PROP:{},KEY:{},LED:{},MSC:{},REL:{},REP:{},SND:{},SW:{},SYN:{}}