Merge tag 'imx-drivers-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/drivers

i.MX drivers update for 5.5:
 - Skip return check for those SCU firmware APIs that are defined as
   void function in firmware.
 - Use established serial_number attribute instead of custom one to show
   SoC's unique ID for i.MX8 SoC drivers.
 - Read i.MX8MQ SOC revision from TF-A which parses ROM and exposes the
   value through a SMC call. This improves the situation that SOC
   revision reports 'unknown' on some older revisions.
 - Add a check and warn on unexpected SCU RX to avoid potential stack
   corruption in imx-scu driver.
 - Fix a sparse warning in imx-scu-irq driver by adding missing header.
 - Remove an unneeded call to devm_of_platform_populate() from imx-dsp
   driver.

* tag 'imx-drivers-5.5' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  soc: imx8mq: Read SOC revision from TF-A
  soc: imx-scu: Using existing serial_number instead of UID
  soc: imx8: Using existing serial_number instead of UID
  firmware: imx: add missing include of <linux/firmware/imx/sci.h>
  firmware: imx: Remove call to devm_of_platform_populate
  firmware: imx: Skip return value check for some special SCU firmware APIs
  firmware: imx: warn on unexpected RX

Link: https://lore.kernel.org/r/20191105150315.15477-1-shawnguo@kernel.org
Signed-off-by: Olof Johansson <olof@lixom.net>

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