Update hcode and hostboot-binaries makefiles to build axone files

This commit updates the hcode and hostboot-binaries makefiles such
that axone-specific files can be built for future axone-based configurations.

Signed-off-by: Mike Baiocchi <mbaiocch@us.ibm.com>
diff --git a/openpower/package/hcode/Config.in b/openpower/package/hcode/Config.in
index 3c57c35..78ef4d9 100644
--- a/openpower/package/hcode/Config.in
+++ b/openpower/package/hcode/Config.in
@@ -31,7 +31,7 @@
 
 config BR2_HCODE_VERSION
 	string
-	default "hw050319a.940" if BR2_HCODE_LATEST_VERSION
+	default "hw050619a.940" if BR2_HCODE_LATEST_VERSION
 	default BR2_HCODE_CUSTOM_VERSION_VALUE \
 		if BR2_HCODE_CUSTOM_VERSION
 
diff --git a/openpower/package/hcode/hcode.mk b/openpower/package/hcode/hcode.mk
index f35a363..c97d54a 100644
--- a/openpower/package/hcode/hcode.mk
+++ b/openpower/package/hcode/hcode.mk
@@ -18,6 +18,9 @@
 HW_IMAGE_BIN=p9n.hw_image.bin
 HCODE_IMAGE_BIN = p9n.ref_image.bin
 
+HW_AXONE_IMAGE_BIN=p9a.hw_image.bin
+HCODE_AXONE_IMAGE_BIN = p9a.ref_image.bin
+
 CROSS_COMPILER_PATH=$(PPE42_GCC_BIN)
 PPE_TOOL_PATH ?= $(CROSS_COMPILER_PATH)
 PPE_PREFIX    ?= $(PPE_TOOL_PATH)/bin/powerpc-eabi-
@@ -33,6 +36,7 @@
 define HCODE_INSTALL_IMAGES_CMDS
 	mkdir -p $(STAGING_DIR)/hcode
 	$(INSTALL) $(@D)/$(HW_IMAGE_BIN_PATH)/$(HW_IMAGE_BIN) $(STAGING_DIR)/hcode/$(HCODE_IMAGE_BIN)
+        $(INSTALL) $(@D)/$(HW_IMAGE_BIN_PATH)/$(HW_AXONE_IMAGE_BIN) $(STAGING_DIR)/hcode/$(HCODE_AXONE_IMAGE_BIN)
 endef
 
 define HCODE_BUILD_CMDS