Added PHY options to control the brigthness of the LED and its dimming.

Signed-off-by: Pol Henarejos <pol.henarejos@cttc.es>

src/led/led.c

@@ -31,6 +31,9 @@ extern void led_driver_color(uint8_t, uint32_t, float);
 
 static uint32_t led_mode = MODE_NOT_MOUNTED;
 
+uint32_t led_phy_btness = MAX_BTNESS;
+bool led_dimmable = false;
+
 void led_set_mode(uint32_t mode) {
     led_mode = mode;
 }