build: Add targets for auto gen of asm-offsets.h and use it in imx35

asm-offsets.h should be auto generated. This patch adds two rules to rules.mk
which makes this possible and removes the rules on imx35.

Signed-off-by: Matthias Weisser <weisserm@arcor.de>
Acked-by: Stefano Babic <sbabic@denx.de>

arch/arm/cpu/arm1136/mx35/Makefile

@@ -50,14 +50,3 @@ include $(SRCTREE)/rules.mk
 sinclude $(obj).depend
 
 #########################################################################
-
-$(TOPDIR)/include/asm/arch/asm-offsets.h:	$(TOPDIR)/include/autoconf.mk.dep \
-	./asm-offsets.s
-	@echo Generating $@
-	$(TOPDIR)/tools/scripts/make-asm-offsets ./asm-offsets.s $@
-
-asm-offsets.s:	$(TOPDIR)/include/autoconf.mk.dep \
-	./asm-offsets.c
-	$(CC) -DDO_DEPS_ONLY \
-		$(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
-		-o $@ ./asm-offsets.c -c -S

rules.mk

@@ -42,4 +42,14 @@ $(HOSTOBJS): $(obj)%.o: %.c
 $(NOPEDOBJS): $(obj)%.o: %.c
 	$(HOSTCC) $(HOSTCFLAGS_NOPED) $(HOSTCFLAGS_$(@F)) $(HOSTCFLAGS_$(BCURDIR)) -o $@ $< -c
 
+$(TOPDIR)/include/asm/arch/asm-offsets.h:	$(TOPDIR)/include/autoconf.mk.dep \
+	$(TOPDIR)/$(CPUDIR)/$(SOC)/asm-offsets.s
+	@echo Generating $@
+	$(TOPDIR)/tools/scripts/make-asm-offsets $(TOPDIR)/$(CPUDIR)/$(SOC)/asm-offsets.s $@
+
+$(TOPDIR)/$(CPUDIR)/$(SOC)/asm-offsets.s:	$(TOPDIR)/include/autoconf.mk.dep \
+	$(TOPDIR)/$(CPUDIR)/$(SOC)/asm-offsets.c
+	$(CC) -DDO_DEPS_ONLY \
+		$(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
+		-o $@ $(TOPDIR)/$(CPUDIR)/$(SOC)/asm-offsets.c -c -S
 #########################################################################