clk: Constify struct clk_bulk_data * where possible

The following functions:

    - clk_bulk_enable()
    - clk_bulk_prepare()
    - clk_bulk_disable()
    - clk_bulk_unprepare()

already expect const clk_bulk_data * as a second parameter, however
their no-op version have mismatching prototypes that don't. Fix that.

While at it, constify the second argument of clk_bulk_prepare_enable()
and clk_bulk_disable_unprepare(), since the functions they are
comprised of already accept const clk_bulk_data *.
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stephen Boyd <sboyd@kernel.org>
Cc: Chris Healy <cphealy@gmail.com>
Cc: linux-clk@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Link: https://lkml.kernel.org/r/20190717145651.17250-1-andrew.smirnov@gmail.comSigned-off-by: Stephen Boyd <sboyd@kernel.org>

include/linux/clk.h

@@ -239,7 +239,8 @@ static inline int clk_prepare(struct clk *clk)
 	return 0;
 }
 
-static inline int __must_check clk_bulk_prepare(int num_clks, struct clk_bulk_data *clks)
+static inline int __must_check
+clk_bulk_prepare(int num_clks, const struct clk_bulk_data *clks)
 {
 	might_sleep();
 	return 0;
@@ -263,7 +264,8 @@ static inline void clk_unprepare(struct clk *clk)
 {
 	might_sleep();
 }
-static inline void clk_bulk_unprepare(int num_clks, struct clk_bulk_data *clks)
+static inline void clk_bulk_unprepare(int num_clks,
+				      const struct clk_bulk_data *clks)
 {
 	might_sleep();
 }
@@ -819,7 +821,8 @@ static inline int clk_enable(struct clk *clk)
 	return 0;
 }
 
-static inline int __must_check clk_bulk_enable(int num_clks, struct clk_bulk_data *clks)
+static inline int __must_check clk_bulk_enable(int num_clks,
+					       const struct clk_bulk_data *clks)
 {
 	return 0;
 }
@@ -828,7 +831,7 @@ static inline void clk_disable(struct clk *clk) {}
 
 
 static inline void clk_bulk_disable(int num_clks,
-				    struct clk_bulk_data *clks) {}
+				    const struct clk_bulk_data *clks) {}
 
 static inline unsigned long clk_get_rate(struct clk *clk)
 {
@@ -917,8 +920,8 @@ static inline void clk_disable_unprepare(struct clk *clk)
 	clk_unprepare(clk);
 }
 
-static inline int __must_check clk_bulk_prepare_enable(int num_clks,
-					struct clk_bulk_data *clks)
+static inline int __must_check
+clk_bulk_prepare_enable(int num_clks, const struct clk_bulk_data *clks)
 {
 	int ret;
 
@@ -933,7 +936,7 @@ static inline int __must_check clk_bulk_prepare_enable(int num_clks,
 }
 
 static inline void clk_bulk_disable_unprepare(int num_clks,
-					      struct clk_bulk_data *clks)
+					      const struct clk_bulk_data *clks)
 {
 	clk_bulk_disable(num_clks, clks);
 	clk_bulk_unprepare(num_clks, clks);