clk: Prepare to remove asm-generic/clkdev.h

Now that all the users of asm/clkdev.h have been replaced with
the generic file we can get rid of the asm-generic file as well
and implement that code directly where it's used.

We only have one caller of __clkdev_alloc(), in clkdev.c so we
can easily remove that and drop the include of asm/clkdev.h in
linux/clkdev.h by putting the __clk_get/__clk_put inlines in
their respective location.

Cc: Russell King <[e-mail]>
Signed-off-by: Stephen Boyd <[e-mail]>

drivers/clk/clkdev.c

···
 {
 	struct clk_lookup_alloc *cla;
 
-	cla = __clkdev_alloc(sizeof(*cla));
+	cla = kzalloc(sizeof(*cla), GFP_KERNEL);
 	if (!cla)
 		return NULL;
 

include/linux/clkdev.h

···
 #ifndef __CLKDEV_H
 #define __CLKDEV_H
 
-#include <asm/clkdev.h>
+#include <linux/slab.h>
 
 struct clk;
 struct clk_hw;
···
 #ifdef CONFIG_COMMON_CLK
 int __clk_get(struct clk *clk);
 void __clk_put(struct clk *clk);
+#else
+static inline int __clk_get(struct clk *clk) { return 1; }
+static inline void __clk_put(struct clk *clk) { }
 #endif
 
 #endif