fusee: SDMMC driver re-design:

- Based on hekate's, linux's and u-boot's source code;
- Full support for SD and MMC;
- Fixes multiple issues;
- Deployed first in fusee-primary.

fusee: Code cleanup and style fixes.

fusee/fusee-primary/src/fs_utils.h

@@ -1,9 +1,19 @@
 #ifndef FUSEE_FS_UTILS_H
 #define FUSEE_FS_UTILS_H
 
-#include "utils.h"
-#include "sdmmc.h"
+#include <stdbool.h>
+#include <stdint.h>
 
-size_t read_from_file(void *dst, size_t dst_size, const char *filename);
+#include "sdmmc/sdmmc.h"
+#include "utils.h"
+
+sdmmc_t g_sd_sdmmc;
+sdmmc_device_t g_sd_device;
+
+bool mount_sd(void);
+void unmount_sd(void);
+uint32_t get_file_size(const char *filename);
+int read_from_file(void *dst, uint32_t dst_size, const char *filename);
+int write_to_file(void *src, uint32_t src_size, const char *filename);
 
 #endif