[ARM] omap: fix omap clk support build errors

arch/arm/plat-omap/clock.c:397: warning: "struct cpufreq_frequency_table" declared inside parameter list
arch/arm/plat-omap/clock.c:397: warning: its scope is only this definition or declaration, which is probably not what you want
arch/arm/plat-omap/clock.c: In function `clk_init_cpufreq_table':
arch/arm/plat-omap/clock.c:402: error: structure has no member named `clk_init_cpufreq_table'
arch/arm/plat-omap/clock.c:403: error: structure has no member named `clk_init_cpufreq_table'

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

arch/arm/plat-omap/clock.c

@@ -21,6 +21,7 @@
 #include <linux/clk.h>
 #include <linux/mutex.h>
 #include <linux/platform_device.h>
+#include <linux/cpufreq.h>
 
 #include <asm/io.h>
 

include/asm-arm/arch-omap/clock.h

@@ -73,6 +73,8 @@ struct clk {
 #endif
 };
 
+struct cpufreq_frequency_table;
+
 struct clk_functions {
 	int		(*clk_enable)(struct clk *clk);
 	void		(*clk_disable)(struct clk *clk);
@@ -83,6 +85,9 @@ struct clk_functions {
 	void		(*clk_allow_idle)(struct clk *clk);
 	void		(*clk_deny_idle)(struct clk *clk);
 	void		(*clk_disable_unused)(struct clk *clk);
+#ifdef CONFIG_CPU_FREQ
+	void		(*clk_init_cpufreq_table)(struct cpufreq_frequency_table **);
+#endif
 };
 
 extern unsigned int mpurate;