[PATCH] clk: imx: scu: Fix compile error with module build of clk-scu.o

[Valdis Klētnieks]

commit 77d8f3068c63ee0983f0b5ba3207d3f7cce11be4 (HEAD)
Author: Dong Aisheng <aisheng.dong@xxxxxxx>
Date:   Wed Jul 29 16:00:10 2020 +0800

    clk: imx: scu: add two cells binding support

This missed a #include, which results in some nasty errors when
built as a module

  CC [M]  drivers/clk/imx/clk-scu.o
In file included from ./include/linux/device.h:32,
                 from ./include/linux/of_platform.h:9,
                 from drivers/clk/imx/clk-scu.c:11:
./include/linux/device/driver.h:290:1: warning: data definition has no type or storage class
 device_initcall(__driver##_init);
 ^~~~~~~~~~~~~~~
./include/linux/platform_device.h:258:2: note: in expansion of macro 'builtin_driver'
  builtin_driver(__platform_driver, platform_driver_register)
  ^~~~~~~~~~~~~~
drivers/clk/imx/clk-scu.c:545:1: note: in expansion of macro 'builtin_platform_driver'
 builtin_platform_driver(imx_clk_scu_driver);
 ^~~~~~~~~~~~~~~~~~~~~~~
./include/linux/device/driver.h:290:1: error: type defaults to 'int' in declaration of 'device_initcall' [-Werror=implicit-int]
 device_initcall(__driver##_init);
 ^~~~~~~~~~~~~~~
./include/linux/platform_device.h:258:2: note: in expansion of macro 'builtin_driver'
  builtin_driver(__platform_driver, platform_driver_register)
  ^~~~~~~~~~~~~~
drivers/clk/imx/clk-scu.c:545:1: note: in expansion of macro 'builtin_platform_driver'
 builtin_platform_driver(imx_clk_scu_driver);
 ^~~~~~~~~~~~~~~~~~~~~~~
drivers/clk/imx/clk-scu.c:545:1: warning: parameter names (without types) in function declaration
In file included from ./include/linux/device.h:32,
                 from ./include/linux/of_platform.h:9,
                 from drivers/clk/imx/clk-scu.c:11:
drivers/clk/imx/clk-scu.c:545:25: warning: 'imx_clk_scu_driver_init' defined but not used [-Wunused-function]
 builtin_platform_driver(imx_clk_scu_driver);
                         ^~~~~~~~~~~~~~~~~~
./include/linux/device/driver.h:286:19: note: in definition of macro 'builtin_driver'
 static int __init __driver##_init(void) \
                   ^~~~~~~~
drivers/clk/imx/clk-scu.c:545:1: note: in expansion of macro 'builtin_platform_driver'
 builtin_platform_driver(imx_clk_scu_driver);
 ^~~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
make[3]: *** [scripts/Makefile.build:283: drivers/clk/imx/clk-scu.o] Error 1

Fix by providing the include.

Signed-off-by: Valdis Kletnieks <valdis.kletnieks@xxxxxx>

diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c
index 229a290ca5b6..15d382f6f9f8 100644
--- a/drivers/clk/imx/clk-scu.c
+++ b/drivers/clk/imx/clk-scu.c
@@ -8,6 +8,7 @@
 #include <linux/arm-smccc.h>
 #include <linux/clk-provider.h>
 #include <linux/err.h>
+#include <linux/module.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
 #include <linux/pm_domain.h>

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