sunxi: add NetConsole by default for Banana Pi/Pro

Simon Glass and Joe Hershberger suggested adding at least one
test case for the CONFIG_DM_ETH plus CONFIG_NETCONSOLE options.

This patch enables NetConsole as a default for the "Banana Pi/Pro"
sunxi boards.

(By the nature of this patch it could probably be extended later
to include all sunxi boards using CONFIG_SUNXI_[EG]MAC.)

Signed-off-by: Bernhard Nortmann <bernhard.nortmann@web.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>

configs/Bananapi_defconfig

@@ -11,5 +11,6 @@ CONFIG_SYS_EXTRA_OPTIONS="AXP209_POWER,SUNXI_GMAC,RGMII,MACPWR=SUNXI_GPH(23),AHC
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_FPGA is not set
+CONFIG_NETCONSOLE=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_USB_EHCI_HCD=y

configs/Bananapro_defconfig

@@ -13,5 +13,6 @@ CONFIG_SYS_EXTRA_OPTIONS="AXP209_POWER,SUNXI_GMAC,RGMII,MACPWR=SUNXI_GPH(23),AHC
 # CONFIG_CMD_IMLS is not set
 # CONFIG_CMD_FLASH is not set
 # CONFIG_CMD_FPGA is not set
+CONFIG_NETCONSOLE=y
 CONFIG_ETH_DESIGNWARE=y
 CONFIG_USB_EHCI_HCD=y