fix(rcar): fix implicit rule invocations in tools

The `rzg_layout_create` and `rcar_layout_create` tools have a rule to
build object files from C files, but it depends on object files in the
parent directory when it should depend on object files in the current
directory. Consequently, the rule is not triggering and the implicit C
compilation rule is executed instead. This rule works, so I have
replaced the broken rule with exactly the same command as what the
implicit rule is executing and fixed the dependency.

Change-Id: Ib8d640361adff8c4d660738dda230e5536bec629
Signed-off-by: Chris Kay <chris.kay@arm.com>

tools/renesas/rcar_layout_create/makefile

@@ -113,8 +113,8 @@ $(OUTPUT_FILE_SA6) : $(MEMORY_DEF_SA6) $(OBJ_FILE_SA6)
 # Compile
 ###################################################
 
-%.o:../%.c
-	$(CC) -c -I $< -o $@
+%.o: %.c
+	$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
 
 .PHONY: clean
 clean:

tools/renesas/rzg_layout_create/makefile

@@ -110,8 +110,8 @@ $(OUTPUT_FILE_SA6) : $(MEMORY_DEF_SA6) $(OBJ_FILE_SA6)
 # Compile
 ###################################################
 
-%.o:../%.c
-	$(CC) -c -I $< -o $@
+%.o: %.c
+	$(CC) $(CPPFLAGS) $(CFLAGS) -c -o $@ $<
 
 .PHONY: clean
 clean: