Fix mkfs.f2fs build error

* OmniROM 8.0 uses AOSP f2fs-tools which builds a static
  mkfs.f2fs directly to $(TARGET_RECOVERY_ROOT_OUT)/sbin

Change-Id: I364a13e33e71abceab2f9ba1bd3179c2d9672b27
diff --git a/prebuilt/Android.mk b/prebuilt/Android.mk
index 93ae610..f03c667 100644
--- a/prebuilt/Android.mk
+++ b/prebuilt/Android.mk
@@ -205,6 +205,8 @@
     ifeq ($(shell test $(CM_PLATFORM_SDK_VERSION) -ge 4; echo $$?),0)
         RELINK_SOURCE_FILES += $(TARGET_OUT_EXECUTABLES)/mkfs.f2fs
         RELINK_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/libf2fs.so
+    else ifeq ($(shell test $(PLATFORM_SDK_VERSION) -ge 26; echo $$?),0)
+        RELINK_SOURCE_FILES += $(TARGET_RECOVERY_ROOT_OUT)/sbin/mkfs.f2fs
     else ifeq ($(shell test $(PLATFORM_SDK_VERSION) -ge 24; echo $$?),0)
         RELINK_SOURCE_FILES += $(TARGET_OUT_EXECUTABLES)/mkfs.f2fs
         RELINK_SOURCE_FILES += $(TARGET_OUT_SHARED_LIBRARIES)/libf2fs.so