Merge tag 'arm-soc/for-4.13/defconfig' of http://github.com/Broadcom/stblinux into next/defconfig

This pull request contains Broadcom ARM-based SoCs defconfig updates for 4.13,
please pull the following:

- Stefan updates the bcm2835_defconfig to include serial, Ethernet and USB
  gadget support which is needed for the Raspberry Pi Zero OTG changes

* tag 'arm-soc/for-4.13/defconfig' of http://github.com/Broadcom/stblinux

:
  ARM: bcm2835_defconfig: Enable serial & ethernet USB gadget support

Signed-off-by: Olof Johansson <olof@lixom.net>