[PATCH -next] clk: pm_clock: provide stubs for pm_clk_runtime_suspend/_resume

[Randy Dunlap]

Add stubs for pm_clk_runtime_suspend() and pm_clk_runtime_resume()
to fix build errors when CONFIG_PM and CONFIG_PM_CLK are not enabled.

Fixes these build errors:

../drivers/clk/qcom/camcc-sc7180.c: In function ‘cam_cc_sc7180_probe’:
../drivers/clk/qcom/camcc-sc7180.c:1672:8: error: implicit declaration of function ‘pm_clk_runtime_resume’; did you mean ‘pm_runtime_resume’? [-Werror=implicit-function-declaration]
  ret = pm_clk_runtime_resume(&pdev->dev);
        ^~~~~~~~~~~~~~~~~~~~~
../drivers/clk/qcom/camcc-sc7180.c:1681:3: error: implicit declaration of function ‘pm_clk_runtime_suspend’; did you mean ‘pm_runtime_suspend’? [-Werror=implicit-function-declaration]
   pm_clk_runtime_suspend(&pdev->dev);
   ^~~~~~~~~~~~~~~~~~~~~~

Fixes: 15d09e830bbc ("clk: qcom: camcc: Add camera clock controller driver for SC7180")
Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: "Rafael J. Wysocki" <rjw@xxxxxxxxxxxxx>
Cc: Len Brown <len.brown@xxxxxxxxx>
Cc: Pavel Machek <pavel@xxxxxx>
Cc: linux-pm@xxxxxxxxxxxxxxx
Cc: Michael Turquette <mturquette@xxxxxxxxxxxx>
Cc: Stephen Boyd <sboyd@xxxxxxxxxx>
Cc: linux-clk@xxxxxxxxxxxxxxx
Cc: Taniya Das <tdas@xxxxxxxxxxxxxx>
Cc: linux-next@xxxxxxxxxxxxxxx
---
 include/linux/pm_clock.h |    9 +++++++++
 1 file changed, 9 insertions(+)

--- linux-next-20201106.orig/include/linux/pm_clock.h
+++ linux-next-20201106/include/linux/pm_clock.h
@@ -83,6 +83,15 @@ static inline void pm_clk_remove(struct
 static inline void pm_clk_remove_clk(struct device *dev, struct clk *clk)
 {
 }
+
+static inline int pm_clk_runtime_suspend(struct device *dev)
+{
+	return 0;
+}
+static inline int pm_clk_runtime_resume(struct device *dev)
+{
+	return 0;
+}
 #endif
 
 #ifdef CONFIG_HAVE_CLK