AP_HAL_Linux: RCOutput_PCA9685: remove trailing whitespace

libraries/AP_HAL_Linux/RCOutput_PCA9685.cpp

@@ -88,7 +88,7 @@ void LinuxRCOutput_PCA9685::init(void* machtnicht)
                                   "valid I2C semaphore!"));
         return; /* never reached */
     }
-    
+
     reset_all_channels();
 
     /* Set the initial frequency */
@@ -128,7 +128,7 @@ void LinuxRCOutput_PCA9685::set_freq(uint32_t chmask, uint16_t freq_hz)
     }
 
     /* Shutdown before sleeping.
-     * see p.14 of PCA9685 product datasheet 
+     * see p.14 of PCA9685 product datasheet
      */
     hal.i2c->writeRegister(PCA9685_ADDRESS, PCA9685_RA_ALL_LED_OFF_H, PCA9685_ALL_LED_OFF_H_SHUT);
 
@@ -214,7 +214,7 @@ uint16_t LinuxRCOutput_PCA9685::read(uint8_t ch)
 
 void LinuxRCOutput_PCA9685::read(uint16_t* period_us, uint8_t len)
 {
-    for (int i = 0; i < len; i++) 
+    for (int i = 0; i < len; i++)
         period_us[i] = read(0 + i);
 }