zephyr: enable CONFIG_EXTERNAL_STORAGE
Enables the CONFIG_EXTERNAL_STORAGE features now that all the underlying
requirements have been met.
BRANCH=none
TEST=zmake testall
TEST=build volteer, flash, see it boot
@@ -246,7 +246,7 @@ enum battery_type {
#define CONFIG_RAM_SIZE \
(CONFIG_DATA_RAM_SIZE - CONFIG_PLATFORM_EC_BOOT_RAM_SIZE)
-#ifdef PLATFORM_EC_EXTERNAL_STORAGE
+#ifdef CONFIG_PLATFORM_EC_EXTERNAL_STORAGE
#define CONFIG_EXTERNAL_STORAGE
#endif
