net: phy: Request rgmii-id phy reset gpio as output

Request the reset gpio of the rgmii-id phy as output to be consistent
with the eth-phy-uclass driver.

Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier@weidmueller.com>
Reviewed-by: Michal Simek <michal.simek@amd.com>