opal-gard: add package as part of libflash build

Signed-off-by: Stewart Smith <stewart@linux.ibm.com>
diff --git a/openpower/package/libflash/libflash.mk b/openpower/package/libflash/libflash.mk
index 3e2abe7..25a9b94 100644
--- a/openpower/package/libflash/libflash.mk
+++ b/openpower/package/libflash/libflash.mk
@@ -27,11 +27,16 @@
 	$(if $(BR2_PACKAGE_PFLASH),
 		PREFIX=$(STAGING_DIR)/usr $(LIBFLASH_MAKE_ENV) \
 		       -C $(@D)/external/pflash)
+	$(if $(BR2_PACKAGE_OPAL_GARD),
+		PREFIX=$(STAGING_DIR)/usr $(LIBFLASH_MAKE_ENV) \
+		       -C $(@D)/external/gard)
 endef
 
 define HOST_LIBFLASH_BUILD_CMDS
     $(HOST_MAKE_ENV) SKIBOOT_VERSION=$(LIBFLASH_VERSION) \
 	    $(MAKE) -C $(@D)/external/pflash
+    $(HOST_MAKE_ENV) SKIBOOT_VERSION=$(LIBFLASH_VERSION) \
+	    $(MAKE) -C $(@D)/external/gard
 endef
 
 define LIBFLASH_INSTALL_STAGING_CMDS
@@ -45,6 +50,8 @@
 	$(if $(BR2_PACKAGE_PFLASH),
 		DESTDIR=$(TARGET_DIR) $(LIBFLASH_MAKE_ENV) \
 		       -C $(@D)/external/pflash install)
+	$(if $(BR2_PACKAGE_OPAL_GARD),
+		$(INSTALL) $(@D)/external/gard/gard $(TARGET_DIR)/usr/bin/opal-gard)
 endef
 
 define HOST_LIBFLASH_INSTALL_CMDS