Pull "Broadcom soc changes for 4.9" from Florian Fainelli:

This pull request contains Broadcom ARM-based SoC changes for 4.9, please pull
the following:

- Rafal adds preliminary support for the new BCM53573 Wi-Fi SoC based on a
  single core Cortex A7 and re-using a bunch of iProc peripherals

- Florian adds support for earlyprintk on Broadcom STB/CM ARM-based chips by
  reading the chip family_id value from a known location and deriving the UART
  based address

* tag 'arm-soc/for-4.9/soc' of http://github.com/Broadcom/stblinux:
  ARM: BCM53573: Initial support for Broadcom BCM53573 SoCs
  ARM: brcmstb: Add earlyprintk support using run-time checks