tests/docker: do not duplicate rules for hexagon-cross

The commands for docker-image-debian-hexagon-cross are the same as those
in debian-toolchain-run, just with a nonstandard path to build-toolchain.sh.
Reuse the definition by renaming the debian-hexagon-cross.docker.d directory.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20220401141326.1244422-9-pbonzini@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220419091020.3008144-12-alex.bennee@linaro.org>

tests/docker/Makefile.include

@@ -121,28 +121,6 @@ docker-image-debian11: NOUSER=1
 # alpine has no adduser
 docker-image-alpine: NOUSER=1
 
-#
-# The build rule for hexagon-cross is special in so far for most of
-# the time we don't want to build it. While dockers caching does avoid
-# this most of the time sometimes we want to force the issue.
-#
-docker-image-debian-hexagon-cross: $(DOCKER_FILES_DIR)/debian-hexagon-cross.docker
-	$(if $(NOCACHE), 								\
-		$(call quiet-command,							\
-			$(DOCKER_SCRIPT) build -t qemu/debian-hexagon-cross -f $< 	\
-			$(if $V,,--quiet) --no-cache 					\
-			--registry $(DOCKER_REGISTRY) --extra-files			\
-			$(DOCKER_FILES_DIR)/debian-hexagon-cross.docker.d/build-toolchain.sh, \
-			"BUILD", "debian-hexagon-cross"),				\
-		$(call quiet-command,							\
-			$(DOCKER_SCRIPT) fetch $(if $V,,--quiet)			\
-				qemu/debian-hexagon-cross $(DOCKER_REGISTRY),		\
-			"FETCH", "debian-hexagon-cross")				\
-		$(call quiet-command,							\
-			$(DOCKER_SCRIPT) update $(if $V,,--quiet) 			\
-				qemu/debian-hexagon-cross --add-current-user,		\
-			"PREPARE", "debian-hexagon-cross"))
-
 debian-toolchain-run = \
 	$(if $(NOCACHE), 						\
 		$(call quiet-command,					\
@@ -162,6 +140,10 @@ debian-toolchain-run = \
 			"PREPARE", $1))
 debian-toolchain = $(call debian-toolchain-run,$(patsubst docker-image-%,%,$1))
 
+docker-image-debian-hexagon-cross: $(DOCKER_FILES_DIR)/debian-hexagon-cross.docker \
+	$(DOCKER_FILES_DIR)/debian-hexagon-cross.d/build-toolchain.sh
+	$(call debian-toolchain, $@)
+
 docker-image-debian-microblaze-cross: $(DOCKER_FILES_DIR)/debian-toolchain.docker \
     $(DOCKER_FILES_DIR)/debian-microblaze-cross.d/build-toolchain.sh
 	$(call debian-toolchain, $@)