Merge tag 'imx7ulp-dt-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/dt

i.MX7ULP device tree for 4.21:
 - It includes the initial device tree for i.MX7ULP SoC and EVK board
   support.

* tag 'imx7ulp-dt-4.21' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: dts: imx: add imx7ulp evk support
  ARM: dts: imx: add common imx7ulp dtsi support
  dt-bindings: fsl: add imx7ulp pm related components bindings
  dt-bindings: fsl: add compatible for imx7ulp evk
  clk: imx: add imx7ulp clk driver
  clk: imx: implement new clk_hw based APIs
  clk: imx: make mux parent strings const
  dt-bindings: clock: add imx7ulp clock binding doc
  clk: imx: add imx7ulp composite clk support
  clk: imx: add pfdv2 support
  clk: imx: add pllv4 support
  clk: fractional-divider: add CLK_FRAC_DIVIDER_ZERO_BASED flag support
  clk: imx: add gatable clock divider support
Signed-off-by: Olof Johansson <olof@lixom.net>