fix: flash region

Author: HalfSweet

src/fw/flash_region/flash_region.h

@@ -42,7 +42,7 @@
 #elif PLATFORM_SNOWY || PLATFORM_SPALDING
   #include "flash_region_s29vs.h"
 #elif PLATFORM_OBELIX
-  #include "flash_region_mt25q.h"
+  #include "flash_region_sf32lb_int.h"
 #else
   #error "Unknown platform"
 #endif

src/fw/flash_region/flash_region_sf32lb_int.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#define SECTOR_SIZE_BYTES 0x10000
+#define SECTOR_ADDR_MASK (~(SECTOR_SIZE_BYTES - 1))
+
+#define SUBSECTOR_SIZE_BYTES 0x1000
+#define SUBSECTOR_ADDR_MASK (~(SUBSECTOR_SIZE_BYTES - 1))
+#define FLASH_FILESYSTEM_BLOCK_SIZE SUBSECTOR_SIZE_BYTES
+
+// Filesystem layout
+///////////////////////////////////////
+// TODO