Sync betaflight to Gitea

lib/main/STM32/n6_fsbl/stm32n6xx_it.c

@@ -0,0 +1,13 @@
+/*
+ * Interrupt handlers for the FSBL stub. Only SysTick is wired up — HAL_Init
+ * starts a 1 ms tick that HAL_XSPI_Command and friends use for timeout
+ * accounting. Everything else stays defaulted to the spin-loops in the
+ * startup file (the FSBL doesn't enable any interrupts beyond SysTick).
+ */
+
+#include "main.h"
+
+void SysTick_Handler(void)
+{
+    HAL_IncTick();
+}