settings: zms: Add FLASH_MAP dependency

The ZMS backend for Settings uses the `flash_area` API, which means it
requires CONFIG_FLASH_MAP to be enabled, so update Kconfig accordingly.
Note that ZMS itself does not depend on this.

Signed-off-by: Grzegorz Swiderski <[email protected]>

Author: 57300

subsys/settings/Kconfig

@@ -52,6 +52,7 @@ choice SETTINGS_BACKEND
 config SETTINGS_ZMS
 	bool "ZMS (Zephyr Memory Storage)"
 	depends on ZMS
+	depends on FLASH_MAP
 	select SYS_HASH_FUNC32
 	help
 	  Use ZMS as settings storage backend.