arch/arm/mach-netx/fb.c: reuse dummy clk routines for CONFIG_HAVE_CLK=n

mach-netx had its own implementation of clk routines like, clk_get{put},
clk_enable{disable}, etc.  And with introduction of following patchset:

  https://lkml.org/lkml/2012/4/24/154

we get compilation error for multiple definition of these routines.

Sascha had following suggestion to deal with it:

  http://www.spinics.net/lists/arm-kernel/msg179369.html

So, remove this code completely.
Signed-off-by: NViresh Kumar <viresh.kumar2@arm.com>
Reported-by: NPaul Gortmaker <paul.gortmaker@gmail.com>
Acked-by: NSascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

arch/arm/mach-netx/fb.c

@@ -69,29 +69,6 @@ void netx_clcd_remove(struct clcd_fb *fb)
 			      fb->fb.screen_base, fb->fb.fix.smem_start);
 }
 
-void clk_disable(struct clk *clk)
-{
-}
-
-int clk_set_rate(struct clk *clk, unsigned long rate)
-{
-	return 0;
-}
-
-int clk_enable(struct clk *clk)
-{
-	return 0;
-}
-
-struct clk *clk_get(struct device *dev, const char *id)
-{
-	return dev && strcmp(dev_name(dev), "fb") == 0 ? NULL : ERR_PTR(-ENOENT);
-}
-
-void clk_put(struct clk *clk)
-{
-}
-
 static AMBA_AHB_DEVICE(fb, "fb", 0, 0x00104000, { NETX_IRQ_LCD }, NULL);
 
 int netx_fb_init(struct clcd_board *board, struct clcd_panel *panel)