mb/siemens/fa_ehl/variants/fa_ehl: Remove I210 driver

Intel I210 Ethernet Transceiver is not used on the platform.
As there are dependencies in the mainboard code that references
functions defined by I210 code a new header (tsn_gbe.h) was added as it
contains the dependent function definitions. The corresponding TSN_GBE
driver will be used anyway on the platform. Thereby dependencies that
lead to a failed build should be resolved with this commit.

Change-Id: I413cb334ee06e3fc7183dc2621b6091f0d0b602b
Signed-off-by: Johannes Hahn <johannes-hahn@siemens.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/86425
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Mario Scheithauer <mario.scheithauer@siemens.com>

src/mainboard/siemens/fa_ehl/mainboard.c

@@ -8,9 +8,9 @@
 #include <device/pci_ops.h>
 #include <device/pci_ids.h>
 #include <hwilib.h>
-#include <i210.h>
 #include <soc/gpio.h>
 #include <soc/ramstage.h>
+#include <soc/tsn_gbe.h>
 #include <string.h>
 #include <timer.h>
 #include <timestamp.h>

src/mainboard/siemens/fa_ehl/variants/fa_ehl/Kconfig

@@ -4,7 +4,6 @@ if BOARD_SIEMENS_FA_EHL
 
 config BOARD_SPECIFIC_OPTIONS
 	def_bool y
-	select DRIVER_INTEL_I210
 	select EHL_TSN_DRIVER
 	select DRIVERS_ETH_PHY_M88E1512