apple_smc_key_search
error = apple_smc_key_search(dev, "T\0\0\0", &start);
error = apple_smc_key_search(dev, "U\0\0\0", &end);
error = apple_smc_key_search(dev, "V\0\0\0", &start);
if (error == 0) error = apple_smc_key_search(dev, "W\0\0\0", &end);
error = apple_smc_key_search(dev, "I\0\0\0", &start);
if (error == 0) error = apple_smc_key_search(dev, "J\0\0\0", &end);
error = apple_smc_key_search(dev, "P\0\0\0", &start);
if (error == 0) error = apple_smc_key_search(dev, "Q\0\0\0", &end);
error = apple_smc_key_search(dev, "A\0\0\0", &start);
if (error == 0) error = apple_smc_key_search(dev, "B\0\0\0", &end);
int apple_smc_key_search(device_t, const char *, unsigned int *);