build(rzg-layout): split combined targets

This is a small change to split up the generation of the RZ/G layout
images into unique targets. This is predominantly for cleanliness
reasons - Make current doesn't know about the `.bin` and `.srec`
binaries generated by the `.elf` target.

Change-Id: I81251ac647b85c5eec8f910ddc841a5a32b49e67
Signed-off-by: Chris Kay <chris.kay@arm.com>
diff --git a/changelog.yaml b/changelog.yaml
index 302546e..55fbba4 100644
--- a/changelog.yaml
+++ b/changelog.yaml
@@ -1434,6 +1434,10 @@
         subsections:
           - title: R-Car Layout Tool
             scope: rcar-layout
+
+          - title: R/ZG Layout Tool
+            scope: rzg-layout
+
   - title: Dependencies
     scope: deps
 
diff --git a/tools/renesas/rzg_layout_create/makefile b/tools/renesas/rzg_layout_create/makefile
index d2a54ea..1e8f7ff 100644
--- a/tools/renesas/rzg_layout_create/makefile
+++ b/tools/renesas/rzg_layout_create/makefile
@@ -1,4 +1,5 @@
 #
+# Copyright (c) 2024, Arm Limited and Contributors. All rights reserved.
 # Copyright (c) 2020, Renesas Electronics Corporation. All rights reserved.
 #
 # SPDX-License-Identifier: BSD-3-Clause
@@ -82,27 +83,31 @@
 # command
 
 .PHONY: all
-all: $(OUTPUT_FILE_SA0) $(OUTPUT_FILE_SA6)
+
+all: $(FILE_NAME_SA0).srec $(FILE_NAME_SA0).bin
+all: $(FILE_NAME_SA6).srec $(FILE_NAME_SA6).bin
+
 ###################################################
 # Linker
 ###################################################
-$(OUTPUT_FILE_SA0) : $(MEMORY_DEF_SA0) $(OBJ_FILE_SA0)
-	$(aarch64-ld) $(OBJ_FILE_SA0) -nostdlib	\
-	-T $(MEMORY_DEF_SA0)			\
-	-o $(OUTPUT_FILE_SA0)			\
-	-Wl,-Map $(FILE_NAME_SA0).map 		\
+
+$(FILE_NAME_SA0).srec: $(OUTPUT_FILE_SA0)
+	$(aarch64-oc) -O srec --adjust-vma=$(RCAR_VMA_ADJUST_ADDR) --srec-forceS3 $(OUTPUT_FILE_SA0) $(FILE_NAME_SA0).srec
 
-	$(aarch64-oc) -O srec --adjust-vma=$(RCAR_VMA_ADJUST_ADDR) --srec-forceS3  $(OUTPUT_FILE_SA0) $(FILE_NAME_SA0).srec
-	$(aarch64-oc) -O binary --adjust-vma=$(RCAR_VMA_ADJUST_ADDR) --srec-forceS3  $(OUTPUT_FILE_SA0) $(FILE_NAME_SA0).bin
+$(FILE_NAME_SA0).bin: $(OUTPUT_FILE_SA0)
+	$(aarch64-oc) -O binary --adjust-vma=$(RCAR_VMA_ADJUST_ADDR) --srec-forceS3 $(OUTPUT_FILE_SA0) $(FILE_NAME_SA0).bin
 
-$(OUTPUT_FILE_SA6) : $(MEMORY_DEF_SA6) $(OBJ_FILE_SA6)
-	$(aarch64-ld) $(OBJ_FILE_SA6) -nostdlib	\
-	-T $(MEMORY_DEF_SA6)			\
-	-o $(OUTPUT_FILE_SA6)			\
-	-Wl,-Map $(FILE_NAME_SA6).map 		\
+$(OUTPUT_FILE_SA0): $(MEMORY_DEF_SA0) $(OBJ_FILE_SA0)
+	$(aarch64-ld) $(OBJ_FILE_SA0) -nostdlib -T $(MEMORY_DEF_SA0) -o $(OUTPUT_FILE_SA0) -Wl,-Map $(FILE_NAME_SA0).map
+
+$(FILE_NAME_SA6).srec: $(OUTPUT_FILE_SA6)
+	$(aarch64-oc) -O srec --adjust-vma=$(RCAR_VMA_ADJUST_ADDR) --srec-forceS3 $(OUTPUT_FILE_SA6) $(FILE_NAME_SA6).srec
+
+$(FILE_NAME_SA6).bin: $(OUTPUT_FILE_SA6)
+	$(aarch64-oc) -O binary --adjust-vma=$(RCAR_VMA_ADJUST_ADDR) --srec-forceS3 $(OUTPUT_FILE_SA6) $(FILE_NAME_SA6).bin
 
-	$(aarch64-oc) -O srec --adjust-vma=$(RCAR_VMA_ADJUST_ADDR) --srec-forceS3  $(OUTPUT_FILE_SA6) $(FILE_NAME_SA6).srec
-	$(aarch64-oc) -O binary --adjust-vma=$(RCAR_VMA_ADJUST_ADDR) --srec-forceS3  $(OUTPUT_FILE_SA6) $(FILE_NAME_SA6).bin
+$(OUTPUT_FILE_SA6): $(MEMORY_DEF_SA6) $(OBJ_FILE_SA6)
+	$(aarch64-ld) $(OBJ_FILE_SA6) -nostdlib -T $(MEMORY_DEF_SA6) -o $(OUTPUT_FILE_SA6) -Wl,-Map $(FILE_NAME_SA6).map
 
 ###################################################
 # Compile