u8500: Moving prcmu to cpu directory

This is to allow the prcmu functions to be used by multiple
u8500-based processors.

Signed-off-by: Mathieu Poirier <mathieu.poirier@linaro.org>
Signed-off-by: John Rigby <john.rigby@linaro.org>
diff --git a/board/st-ericsson/u8500/Makefile b/board/st-ericsson/u8500/Makefile
index 4091a42..4ea2212 100644
--- a/board/st-ericsson/u8500/Makefile
+++ b/board/st-ericsson/u8500/Makefile
@@ -25,7 +25,7 @@
 CFLAGS += -D__RELEASE -D__STN_8500
 LIB	= $(obj)lib$(BOARD).o
 
-COBJS	:= u8500_href.o gpio.o prcmu.o
+COBJS	:= u8500_href.o gpio.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))