sh: Do not include start.o in lib$(CPU).o

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
diff --git a/arch/sh/cpu/sh2/Makefile b/arch/sh/cpu/sh2/Makefile
index 1cc0031..686bb79 100644
--- a/arch/sh/cpu/sh2/Makefile
+++ b/arch/sh/cpu/sh2/Makefile
@@ -12,13 +12,15 @@
 
 LIB	= $(obj)lib$(CPU).o
 
-SOBJS	= start.o
+START	= start.o
 COBJS	= cpu.o interrupts.o watchdog.o
 
 SRCS    := $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS    := $(addprefix $(obj),$(COBJS))
 SOBJS   := $(addprefix $(obj),$(SOBJS))
 
+all:    $(START) $(LIB)
+
 $(LIB):	$(OBJS) $(SOBJS)
 	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
 
diff --git a/arch/sh/cpu/sh3/Makefile b/arch/sh/cpu/sh3/Makefile
index e707de3..26cb1ce 100644
--- a/arch/sh/cpu/sh3/Makefile
+++ b/arch/sh/cpu/sh3/Makefile
@@ -15,13 +15,15 @@
 
 LIB	= $(obj)lib$(CPU).o
 
-SOBJS	= start.o
+START	= start.o
 COBJS	= cpu.o interrupts.o watchdog.o cache.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))
 SOBJS	:= $(addprefix $(obj),$(SOBJS))
 
+all:    $(START) $(LIB)
+
 $(LIB):	$(OBJS) $(SOBJS)
 	$(call cmd_link_o_target, $(OBJS) $(SOBJS))
 
diff --git a/arch/sh/cpu/sh4/Makefile b/arch/sh/cpu/sh4/Makefile
index e7d8903..5680d61 100644
--- a/arch/sh/cpu/sh4/Makefile
+++ b/arch/sh/cpu/sh4/Makefile
@@ -12,13 +12,15 @@
 
 LIB	= $(obj)lib$(CPU).o
 
-SOBJS	= start.o
+START	= start.o
 COBJS	= cpu.o interrupts.o watchdog.o cache.o
 
 SRCS	:= $(SOBJS:.o=.S) $(COBJS:.o=.c)
 OBJS	:= $(addprefix $(obj),$(COBJS))
 SOBJS	:= $(addprefix $(obj),$(SOBJS))
 
+all:    $(START) $(LIB)
+
 $(LIB):	$(OBJS) $(SOBJS)
 	$(call cmd_link_o_target, $(OBJS) $(SOBJS))