stm32f3: update examples for new library code

examples/stm32/f3/stm32f3-discovery/fancyblink/fancyblink.c

@@ -25,7 +25,7 @@
 /* Set STM32 to 64 MHz. */
 static void clock_setup(void)
 {
-	rcc_clock_setup_hsi(&rcc_hsi_8mhz[RCC_CLOCK_64MHZ]);
+	rcc_clock_setup_hsi(&rcc_hsi_configs[RCC_CLOCK_HSI_64MHZ]);
 
 	/* Enable GPIOE clock. */
 	rcc_periph_clock_enable(RCC_GPIOE);