[U-Boot] [PATCH v3 4/6] ARM: dts: at91: Add dts files for at91sam9260ek/9g20ek

[sjg at google.com]

The device tree source files of at91sam9g20ek and at91sam9260ek
boards are copied from the Linux v4.10, do the changes below.
 - Fix the build error for the usb0 node.
 - Add the reg property for the pinctrl node.
 - Move the gpio (pioA, pioB, pioC ...) nodes as the pinctrl's
   slibling nodes, instead of the child nodes.
 - Add the "u-boot,dm-pre-reloc" property for the dbgu node are used
   in board_init_f stage.
 - Add the clk pinctrl of the mmc0 node.
 - Fix the compilation warnings.

Signed-off-by: Wenyou Yang <wenyou.yang at atmel.com>
Reviewed-by: Simon Glass <sjg at chromium.org>
---

Changes in v3: None
Changes in v2: None

 arch/arm/dts/Makefile                  |   5 +
 arch/arm/dts/at91sam9260.dtsi          | 149 ++++++++++++----------
 arch/arm/dts/at91sam9260ek.dts         | 215 +++++++++++++++++++++++++++++++
 arch/arm/dts/at91sam9g20.dtsi          |   4 +-
 arch/arm/dts/at91sam9g20ek.dts         |  29 +++++
 arch/arm/dts/at91sam9g20ek_2mmc.dts    |  56 ++++++++
 arch/arm/dts/at91sam9g20ek_common.dtsi | 227 +++++++++++++++++++++++++++++++++
 7 files changed, 617 insertions(+), 68 deletions(-)
 create mode 100644 arch/arm/dts/at91sam9260ek.dts
 create mode 100644 arch/arm/dts/at91sam9g20ek.dts
 create mode 100644 arch/arm/dts/at91sam9g20ek_2mmc.dts
 create mode 100644 arch/arm/dts/at91sam9g20ek_common.dtsi

Applied to u-boot-dm/next, thanks!