preloading with foreignKey and references overwrite

[cstaud]

Explain your user case and expected results

When using a belongs-to relation with foreignKey and references overwrite preloading does not work. (Adress2)
When not overwriting it works as expected. (Address1)

type Country1 struct {
	Name string `gorm:"primaryKey"`
}

type Country2 struct {
	CName string `gorm:"primaryKey"`
}

type Address1 struct {
	CountryName string
	Country     Country1
}

type Address2 struct {
	CName   string
	Country Country2 `gorm:"foreignKey:CName;references:CName"`
}