drivers/clk: include <module.h> for clk-max77xxx modular code

These files are built off of the tristate COMMON_CLK_MAX77686 and
COMMON_CLK_MAX77802 respectively.  They also contains modular function
calls so they should explicitly include module.h to avoid compile
breakage during header shuffles done in the future.

Cc: Mike Turquette <mturquette@linaro.org>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
diff --git a/drivers/clk/clk-max77686.c b/drivers/clk/clk-max77686.c
index 86cdb3a..446c2fe 100644
--- a/drivers/clk/clk-max77686.c
+++ b/drivers/clk/clk-max77686.c
@@ -23,6 +23,7 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/err.h>
+#include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/mfd/max77686.h>
 #include <linux/mfd/max77686-private.h>