Fix HAL for ESP32.

sources/hal_esp32.c

@@ -72,7 +72,7 @@ chlcd_error_t chlcd_pin_write_pwm(
     return CHLCD_SUCCESS;
 }
 
-static inline chlcd_error_t chlcd_sleep_us(uint32_t time) {
+chlcd_error_t chlcd_sleep_us(uint32_t time) {
     if (time < 1000) {
         ets_delay_us(time); 
         return CHLCD_SUCCESS;