boards: nucleo-f334: update xtimer tuning values

boards/nucleo-f334/include/board.h

@@ -74,6 +74,14 @@ extern "C" {
 #define LED_ORANGE_TOGGLE
 /** @} */
 
+/**
+ * @name xtimer tuning values
+ * @{
+ */
+#define XTIMER_OVERHEAD     5
+#define XTIMER_SHOOT_EARLY  2
+/** @} */
+
 /**
  * @brief Initialize board specific hardware, including clock, LEDs and std-IO
  */

boards/nucleo-f334/include/periph_conf.h

@@ -108,15 +108,6 @@ extern "C" {
 #define SPI_0_MOSI_PORT_CLKEN() (RCC->AHBENR |= RCC_AHBENR_GPIOAEN)
 /** @} */
 
-/**
- * @name xtimer configuration
- * @{
- */
-#define XTIMER_USLEEP_UNTIL_OVERHEAD 10
-#define XTIMER_BACKOFF 15
-#define XTIMER_OVERHEAD 3
-/** @} */
-
 #ifdef __cplusplus
 }
 #endif