net: Add axi emac to Kconfig

Also add dependency on PHYLIB and MII which is required.
Clean PHYLIB dependency from the driver too.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

drivers/net/Kconfig

@@ -102,6 +102,14 @@ config PCH_GBE
 	  This MAC is present in Intel Platform Controller Hub EG20T. It
 	  supports 10/100/1000 Mbps operation.
 
+config XILINX_AXIEMAC
+	depends on DM_ETH && (MICROBLAZE || ARCH_ZYNQ || ARCH_ZYNQMP)
+	select PHYLIB
+	select MII
+	bool "Xilinx AXI Ethernet"
+	help
+	  This MAC is present in Xilinx Microblaze, Zynq and ZynqMP SoCs.
+
 config ZYNQ_GEM
 	depends on DM_ETH && (ARCH_ZYNQ || ARCH_ZYNQMP)
 	select PHYLIB

drivers/net/xilinx_axi_emac.c

@@ -17,10 +17,6 @@
 
 DECLARE_GLOBAL_DATA_PTR;
 
-#if !defined(CONFIG_PHYLIB)
-# error AXI_ETHERNET requires PHYLIB
-#endif
-
 /* Link setup */
 #define XAE_EMMC_LINKSPEED_MASK	0xC0000000 /* Link speed */
 #define XAE_EMMC_LINKSPD_10	0x00000000 /* Link Speed mask for 10 Mbit */