of_alias_get_highest_id
retval = of_alias_get_highest_id("i2c");
res = of_alias_get_highest_id("i3c");
max = of_alias_get_highest_id("mmc");
bus_id = of_alias_get_highest_id("ethernet");
EXPORT_SYMBOL_GPL(of_alias_get_highest_id);
first_dynamic = of_alias_get_highest_id("spi");
int max_alias_num = of_alias_get_highest_id("serial");
extern int of_alias_get_highest_id(const char *stem);