[ARM] Move asm/hardware/clock.h to linux/clk.h

This is needs to be visible to other architectures using the AMBA
bus and peripherals.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/plat-omap/cpu-omap.c b/arch/arm/plat-omap/cpu-omap.c
index fd894bb..98edc9f 100644
--- a/arch/arm/plat-omap/cpu-omap.c
+++ b/arch/arm/plat-omap/cpu-omap.c
@@ -19,13 +19,12 @@
 #include <linux/delay.h>
 #include <linux/init.h>
 #include <linux/err.h>
+#include <linux/clk.h>
 
 #include <asm/hardware.h>
 #include <asm/io.h>
 #include <asm/system.h>
 
-#include <asm/hardware/clock.h>
-
 /* TODO: Add support for SDRAM timing changes */
 
 int omap_verify_speed(struct cpufreq_policy *policy)