ntfs: make sure our confidence is higher then the intel partition add-on

This as the intel partition addon just does a very weak test, and the
NTFS test is much safer. This prevents NTFS filesystems that have a
valid boot sector signature but no partition table, from being
picked up by the intel partition table add-on instead of the ntfs
add-on.

Patch provided by markh, thanks!

src/add-ons/kernel/file_systems/ntfs/fs_func.c

@@ -274,7 +274,9 @@ fs_identify_partition(int fd, partition_data *partition, void **_cookie)
 
 	*_cookie = cookie;
 
-	return 0.8f;
+	// Make sure we return a higher number than the intel partition check
+	// as this one is more accurate.
+	return 0.82f;
 }