Enable bitbang ws2812 for f4 (#7571)

drivers/arm/ws2812.c

@@ -6,7 +6,7 @@
 /* Adapted from https://github.com/bigjosh/SimpleNeoPixelDemo/ */
 
 #ifndef NOP_FUDGE
-#    if defined(STM32F1XX) || defined(STM32F1xx) || defined(STM32F0XX) || defined(STM32F0xx) || defined(STM32F3XX) || defined(STM32F3xx) || defined(STM32L0XX) || defined(STM32L0xx)
+#    if defined(STM32F0XX) || defined(STM32F1XX) || defined(STM32F3XX) || defined(STM32F4XX) || defined(STM32L0XX)
 #        define NOP_FUDGE 0.4
 #    else
 #        error("NOP_FUDGE configuration required")