Add Camera clock controller driver for SC7180

[v3]
 * Introduce helper functions to be used across pll configure and pll rate
   margins.
 * Update the Agera PLL configure/set rate to use the new helper functions.
 * Update documentation binding to update the header inclusion.
 * Update the vco table to 'const'.
 * Fix the failure path of probe.

[v2]
 * Update PLL set rate function : clk_alpha_pll_agera_set_rate
 * Remove mb()

[v1]
 * Add support for Agera PLL which is used in the camera clock controller.

 * Add driver support for camera clock controller for SC7180 and also
   update device tree bindings for the various clocks supported in the
   clock controller.


Taniya Das (4):
  clk: qcom: clk-alpha-pll: Add support for helper functions
  clk: qcom: clk-alpha-pll: Add support for controlling Agera PLLs
  dt-bindings: clock: Add YAML schemas for the QCOM Camera clock
    bindings.
  clk: qcom: camcc: Add camera clock controller driver for SC7180

 .../bindings/clock/qcom,sc7180-camcc.yaml          |   73 +
 drivers/clk/qcom/Kconfig                           |    9 +
 drivers/clk/qcom/Makefile                          |    1 +
 drivers/clk/qcom/camcc-sc7180.c                    | 1736 ++++++++++++++++++++
 drivers/clk/qcom/clk-alpha-pll.c                   |  217 ++-
 drivers/clk/qcom/clk-alpha-pll.h                   |    4 +
 include/dt-bindings/clock/qcom,camcc-sc7180.h      |  121 ++
 7 files changed, 2072 insertions(+), 89 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/clock/qcom,sc7180-camcc.yaml
 create mode 100644 drivers/clk/qcom/camcc-sc7180.c
 create mode 100644 include/dt-bindings/clock/qcom,camcc-sc7180.h

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