mainboard/ocp/monolake: Fix up Kconfig to match devicetree.cb

Remove the Gbe option and enable EHCI1 to match devicetree.cb.

Change-Id: I122175aec313da0800f94da8b2cdf20cc498824f
Signed-off-by: Marc Jones <marcjones@sysproconsulting.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54882
Reviewed-by: Stefan Reinauer <stefan.reinauer@coreboot.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

src/mainboard/ocp/monolake/Kconfig

@@ -9,7 +9,7 @@ config BOARD_SPECIFIC_OPTIONS
 	select INTEGRATED_UART if FSP_PACKAGE_DEFAULT
 	select HAVE_FSP_BIN if FSP_PACKAGE_DEFAULT
 	select SERIRQ_CONTINUOUS_MODE
-	select MAINBOARD_USES_IFD_GBE_REGION
+	select FSP_EHCI1_ENABLE
 	select MAINBOARD_HAS_LPC_TPM
 	select MAINBOARD_HAS_TPM1
 	select IPMI_KCS