ARMV7: OMAP: Move syslib.c to omap-common since it can be shared by OMAP3 and OMAP4

The functions in syslib.c can be shared, so this patch moves it from
cpu/omap3 to cpu/omap-common

Signed-off-by: Steve Sakoman <steve@sakoman.com>
Signed-off-by: Sandeep Paulraj <s-paulraj@ti.com>
diff --git a/arch/arm/cpu/armv7/omap-common/Makefile b/arch/arm/cpu/armv7/omap-common/Makefile
index 3a4a304..caee726 100644
--- a/arch/arm/cpu/armv7/omap-common/Makefile
+++ b/arch/arm/cpu/armv7/omap-common/Makefile
@@ -26,7 +26,9 @@
 LIB	= $(obj)libomap-common.a
 
 SOBJS	:= reset.o
+
 COBJS	:= timer.o
+COBJS	+= syslib.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(SOBJS) $(COBJS))