net: sh_eth: Drop reset GPIO handling in favor of common code

The common code is now capable of handling reset GPIO associated
with PHY. Drop the local ad-hoc code in favor of common code.

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Ramon Fried <rfried.dev@gmail.com>
diff --git a/drivers/net/Kconfig b/drivers/net/Kconfig
index 48f9efc..7d482cb 100644
--- a/drivers/net/Kconfig
+++ b/drivers/net/Kconfig
@@ -695,6 +695,7 @@
 config SH_ETHER
 	bool "Renesas SH Ethernet MAC"
 	select PHYLIB
+	select PHY_ETHERNET_ID
 	help
 	  This driver supports the Ethernet for Renesas SH and ARM SoCs.