Move enabling of caches for F7

Moves cache enabling from SystemInit() to init() as it is not recommended to enable caches before entering main function.

src/main/fc/init.c

@@ -249,6 +249,22 @@ void init(void)
     HAL_Init();
 #endif
 
+#if defined(STM32F7)   
+    /* Enable I-Cache */
+    if (INSTRUCTION_CACHE_ENABLE) {
+        SCB_EnableICache();
+    }
+
+    /* Enable D-Cache */
+    if (DATA_CACHE_ENABLE) {
+        SCB_EnableDCache();
+    }
+
+    if (PREFETCH_ENABLE) {
+        LL_FLASH_EnablePrefetch();
+    }
+#endif
+
     printfSupportInit();
 
     systemInit();

src/main/startup/system_stm32f7xx.c

@@ -345,20 +345,6 @@ void SystemInit(void)
     }
     SCB->VTOR = vtorOffset;
 
-    /* Enable I-Cache */
-    if (INSTRUCTION_CACHE_ENABLE) {
-        SCB_EnableICache();
-    }
-
-    /* Enable D-Cache */
-    if (DATA_CACHE_ENABLE) {
-        SCB_EnableDCache();
-    }
-
-    if (PREFETCH_ENABLE) {
-        LL_FLASH_EnablePrefetch();
-    }
-
     /* Configure the system clock to specified frequency */
     SystemClock_Config();