Add support for building vendor_ramdisk-debug.img

Existing BoardConfig.mk variable:
BOARD_BUILD_VENDOR_RAMDISK_IMAGE := true

generates:
out/target/product/<name>/vendor_ramdisk.img

Extend the above to additionally generate:
out/target/product/<name>/vendor_ramdisk-debug.img

as the two ramdisks should be built together.

Test: make
Change-Id: Ief572e30c9225d0f5569e9ff89096c69accafc7f
diff --git a/core/Makefile b/core/Makefile
index a67d02a..3579142 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -2390,13 +2390,19 @@
 $(INTERNAL_VENDOR_DEBUG_RAMDISK_TARGET): VENDOR_DEBUG_RAMDISK_DIR := $(PRODUCT_OUT)/vendor_debug_ramdisk
 $(INTERNAL_VENDOR_DEBUG_RAMDISK_TARGET): $(INTERNAL_VENDOR_RAMDISK_TARGET) $(INSTALLED_DEBUG_RAMDISK_TARGET)
 $(INTERNAL_VENDOR_DEBUG_RAMDISK_TARGET): $(MKBOOTFS) $(INTERNAL_VENDOR_DEBUG_RAMDISK_FILES) | $(COMPRESSION_COMMAND_DEPS)
-	$(call pretty,"Target vendor debug ramdisk: $@")
 	mkdir -p $(TARGET_VENDOR_DEBUG_RAMDISK_OUT)
 	touch $(TARGET_VENDOR_DEBUG_RAMDISK_OUT)/force_debuggable
 	$(foreach debug_file,$(DEBUG_RAMDISK_FILES), \
 	  cp -f $(debug_file) $(patsubst $(DEBUG_RAMDISK_DIR)/%,$(VENDOR_DEBUG_RAMDISK_DIR)/%,$(debug_file)) &&) true
 	$(MKBOOTFS) -d $(TARGET_OUT) $(VENDOR_RAMDISK_DIR) $(VENDOR_DEBUG_RAMDISK_DIR) $(PRIVATE_ADDITIONAL_DIR) | $(COMPRESSION_COMMAND) > $@
 
+ifeq (true,$(BOARD_BUILD_VENDOR_RAMDISK_IMAGE))
+INSTALLED_VENDOR_DEBUG_RAMDISK_TARGET := $(PRODUCT_OUT)/vendor_ramdisk-debug.img
+$(INSTALLED_VENDOR_DEBUG_RAMDISK_TARGET): $(INTERNAL_VENDOR_DEBUG_RAMDISK_TARGET)
+	$(call pretty,"Target vendor debug ramdisk: $@")
+	$(copy-file-to-target)
+endif
+
 INSTALLED_FILES_FILE_VENDOR_DEBUG_RAMDISK := $(PRODUCT_OUT)/installed-files-vendor-ramdisk-debug.txt
 INSTALLED_FILES_JSON_VENDOR_DEBUG_RAMDISK := $(INSTALLED_FILES_FILE_VENDOR_DEBUG_RAMDISK:.txt=.json)
 $(INSTALLED_FILES_FILE_VENDOR_DEBUG_RAMDISK): .KATI_IMPLICIT_OUTPUTS := $(INSTALLED_FILES_JSON_VENDOR_DEBUG_RAMDISK)
diff --git a/core/main.mk b/core/main.mk
index 97ed93d..d84e43e 100644
--- a/core/main.mk
+++ b/core/main.mk
@@ -1497,6 +1497,9 @@
 .PHONY: vendorramdisk
 vendorramdisk: $(INSTALLED_VENDOR_RAMDISK_TARGET)
 
+.PHONY: vendorramdisk_debug
+vendorramdisk_debug: $(INSTALLED_VENDOR_DEBUG_RAMDISK_TARGET)
+
 .PHONY: productimage
 productimage: $(INSTALLED_PRODUCTIMAGE_TARGET)
 
@@ -1556,6 +1559,7 @@
     $(INSTALLED_VENDOR_BOOTIMAGE_TARGET) \
     $(INSTALLED_VENDOR_DEBUG_BOOTIMAGE_TARGET) \
     $(INSTALLED_VENDOR_RAMDISK_TARGET) \
+    $(INSTALLED_VENDOR_DEBUG_RAMDISK_TARGET) \
     $(INSTALLED_ODMIMAGE_TARGET) \
     $(INSTALLED_VENDOR_DLKMIMAGE_TARGET) \
     $(INSTALLED_ODM_DLKMIMAGE_TARGET) \