mcuboot: Fix SWAP_USING_MOVE FWU method

Added missing flash_area_get_sector function, which
is required by mcuboot.

Signed-off-by: Dávid Házi <[email protected]>
Change-Id: I6e7e4dfc68a5c7fd35c3286085c92189e956b1e0
(cherry picked from commit e5b6cd3)
Signed-off-by: Dominik Ermel <[email protected]>

Author: david-hazi-arm

bl2/ext/mcuboot/flash_map_extended.c

@@ -100,3 +100,13 @@ int flash_area_read_is_empty(const struct flash_area *fa, uint32_t off,
 
     return 1;
 }
+
+int flash_area_get_sector(const struct flash_area *fa, uint32_t off,
+                          struct flash_sector *sector)
+{
+    sector->fs_off = (off / DRV_FLASH_AREA(fa)->GetInfo()->sector_size) *
+                     DRV_FLASH_AREA(fa)->GetInfo()->sector_size;
+    sector->fs_size = DRV_FLASH_AREA(fa)->GetInfo()->sector_size;
+
+    return 0;
+}