flash_map: Increase minimum supported write align via flash_area_align

Signed-off-by: Gustavo Henrique Nihei <gustavo.nihei@espressif.com>
diff --git a/sim/mcuboot-sys/csupport/run.c b/sim/mcuboot-sys/csupport/run.c
index a51ced9..6c61228 100644
--- a/sim/mcuboot-sys/csupport/run.c
+++ b/sim/mcuboot-sys/csupport/run.c
@@ -43,7 +43,7 @@
         uint32_t size);
 extern int sim_flash_write(uint8_t flash_id, uint32_t offset, const uint8_t *src,
         uint32_t size);
-extern uint16_t sim_flash_align(uint8_t flash_id);
+extern uint32_t sim_flash_align(uint8_t flash_id);
 extern uint8_t sim_flash_erased_val(uint8_t flash_id);
 
 struct sim_context {
@@ -222,7 +222,7 @@
 #endif
 }
 
-uint16_t flash_area_align(const struct flash_area *area)
+uint32_t flash_area_align(const struct flash_area *area)
 {
     return sim_flash_align(area->fa_device_id);
 }