omap4: add clock support

Add support for:
1. DPLL locking
2. Initialization of clock domains and clock modules
3. Setting up the right voltage on voltage rails

This work draws upon previous work done for x-loader by:
	Santosh Shilimkar <santosh.shilimkar@ti.com>
	Rajendra Nayak <rnayak@ti.com>

Signed-off-by: Aneesh V <aneesh@ti.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
diff --git a/arch/arm/cpu/armv7/omap4/Makefile b/arch/arm/cpu/armv7/omap4/Makefile
index 987dc9d..ac4b2a6 100644
--- a/arch/arm/cpu/armv7/omap4/Makefile
+++ b/arch/arm/cpu/armv7/omap4/Makefile
@@ -28,6 +28,7 @@
 SOBJS	+= lowlevel_init.o
 
 COBJS	+= board.o
+COBJS	+= clocks.o
 COBJS	+= mem.o
 COBJS	+= sys_info.o