[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/ocpi.c b/arch/arm/plat-omap/ocpi.c
index b861482..e40fcc8 100644
--- a/arch/arm/plat-omap/ocpi.c
+++ b/arch/arm/plat-omap/ocpi.c
@@ -31,9 +31,9 @@
 #include <linux/init.h>
 #include <linux/spinlock.h>
 #include <linux/err.h>
+#include <linux/clk.h>
 
 #include <asm/io.h>
-#include <asm/hardware/clock.h>
 #include <asm/hardware.h>
 
 #define OCPI_BASE		0xfffec320