arm: omap2+ remove dead clock code

Remove omap_clocks_register and dummy_ck. The former is not used anymore
now that the statically defined clk stuctures are replaced with proper
descriptors and registered with the framework.

The dummy clock in arch/arm/mach-omap2 is made redundant by the OMAP3+
clock data that migrated to drivers/clk.

An additional benefit to this clean-up is removing the references to
clk-private.h which will be removed.

Cc: Paul Walmsley <paul@pwsan.com>
Cc: Tero Kristo <t-kristo@ti.com>
Acked-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Michael Turquette <mturquette@linaro.org>

arch/arm/mach-omap2/clock.c

@@ -23,7 +23,6 @@
 #include <linux/clk-provider.h>
 #include <linux/io.h>
 #include <linux/bitops.h>
-#include <linux/clk-private.h>
 #include <asm/cpu.h>
 
 #include <trace/events/power.h>
@@ -629,21 +628,6 @@ const struct clk_hw_omap_ops clkhwops_wait = {
 	.find_companion	= omap2_clk_dflt_find_companion,
 };
 
-/**
- * omap_clocks_register - register an array of omap_clk
- * @ocs: pointer to an array of omap_clk to register
- */
-void __init omap_clocks_register(struct omap_clk oclks[], int cnt)
-{
-	struct omap_clk *c;
-
-	for (c = oclks; c < oclks + cnt; c++) {
-		clkdev_add(&c->lk);
-		if (!__clk_init(NULL, c->lk.clk))
-			omap2_init_clk_hw_omap_clocks(c->lk.clk);
-	}
-}
-
 /**
  * omap2_clk_switch_mpurate_at_boot - switch ARM MPU rate by boot-time argument
  * @mpurate_ck_name: clk name of the clock to change rate