net: e1000: Depend on CONFIG_PCI

This driver depends on PCI. Update the Kconfig accordingly.
Signed-off-by: NSean Anderson <sean.anderson@seco.com>
Reviewed-by: NTim Harvey <tharvey@gateworks.com>
Reviewed-by: NStefan Roese <sr@denx.de>
Reviewed-by: NRamon Fried <rfried.dev@gmail.com>

drivers/net/Kconfig

@@ -231,6 +231,7 @@ config DWC_ETH_QOS_TEGRA186
 
 config E1000
 	bool "Intel PRO/1000 Gigabit Ethernet support"
+	depends on PCI
 	help
 	  This driver supports Intel(R) PRO/1000 gigabit ethernet family of
 	  adapters.  For more information on how to identify your adapter, go