Fusee: Deployed new SDMMC driver in fusee-secondary. All stages boot now.

Fusee: Fixed wrong argument in se.c function.
Fusee: Improved timers.

fusee/fusee-secondary/src/fs_utils.h

@@ -2,7 +2,7 @@
 #define FUSEE_FS_UTILS_H
 
 #include "utils.h"
-#include "sdmmc.h"
+#include "sdmmc/sdmmc.h"
 
 size_t get_file_size(const char *filename);
 size_t read_from_file(void *dst, size_t dst_size, const char *filename);