ARM: OMAP2xxx: clock: remove global 'dclk' variable

Remove the global 'dclk' variable, instead replacing it with a
variable local to the dpllcore clock type C file.  This removes some
of the special-case code surrounding the OMAP2xxx clock init.

This patch is a prerequisite for the removal of the
omap_prcm_restart() code from arch/arm/mach-omap2/prcm.c.  It also
cleans up some special-case OMAP2xxx clock code in the process.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Vaibhav Hiremath <hvaibhav@ti.com>
diff --git a/arch/arm/mach-omap2/clock2xxx.h b/arch/arm/mach-omap2/clock2xxx.h
index cb6df8c..19dc065 100644
--- a/arch/arm/mach-omap2/clock2xxx.h
+++ b/arch/arm/mach-omap2/clock2xxx.h
@@ -15,10 +15,11 @@
 unsigned long omap2_osc_clk_recalc(struct clk *clk);
 unsigned long omap2_dpllcore_recalc(struct clk *clk);
 int omap2_reprogram_dpllcore(struct clk *clk, unsigned long rate);
-unsigned long omap2xxx_clk_get_core_rate(struct clk *clk);
+unsigned long omap2xxx_clk_get_core_rate(void);
 u32 omap2xxx_get_apll_clkin(void);
 u32 omap2xxx_get_sysclkdiv(void);
 void omap2xxx_clk_prepare_for_reboot(void);
+void omap2xxx_clkt_dpllcore_init(struct clk *clk);
 
 #ifdef CONFIG_SOC_OMAP2420
 int omap2420_clk_init(void);
@@ -34,8 +35,6 @@
 
 extern void __iomem *prcm_clksrc_ctrl, *cm_idlest_pll;
 
-extern struct clk *dclk;
-
 extern const struct clkops clkops_omap2430_i2chs_wait;
 extern const struct clkops clkops_oscck;
 extern const struct clkops clkops_apll96;