[OE-core] [PATCH] image_types.bbclass: Make ubi depend on ubifs

[Bach, Pascal]

> > }
> > +IMAGE_TYPEDEP_ubi = "ubifs"
> > +
> 
> 'ubifs' or 'ubifs-native'?

IMAGE_TYPEDEP describes dependencies between image types. So in this case ubifs referred to IMAGE_CMD_ubifs
I'm not aware that there is ubifs-native image type.