util/docker: add support for crossgcc building params

In some cases users may want to build just one toolchain not all. This
patch introduces COREBOOT_CROSSGCC_PARAM, which by default is set to
all_without_gdb so previous behavior is not changed. Users can pass
different parameter eg. COREBOOT_CROSSGCC_PARAM=build-x64 to build just
x64 SDK.

Change-Id: I858ba09644b5b86a4b0e828e4f342aee5083be93
Signed-off-by: Piotr Król <piotr.krol@3mdeb.com>
Reviewed-on: https://review.coreboot.org/22276
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Martin Roth <martinroth@google.com>

util/docker/Makefile

@@ -34,6 +34,9 @@ export COREBOOT_CONTAINER_VERSION?=$(crossgcc_version)
 # Commit id to build from
 export DOCKER_COMMIT?=$(shell git log -n 1 --pretty=%h)
 
+# SDK architecture
+export COREBOOT_CROSSGCC_PARAM?=all_without_gdb
+
 test-docker:
 	$(if $(DOCKER),,\
 		$(warning Docker command not found.  Please install docker) \
@@ -50,6 +53,7 @@ coreboot-sdk: test-docker
 	cat coreboot-sdk/Dockerfile | \
 		sed "s/{{DOCKER_COMMIT}}/$(DOCKER_COMMIT)/" | \
 		sed "s/{{SDK_VERSION}}/$(COREBOOT_CONTAINER_VERSION)/" | \
+		sed "s/{{CROSSGCC_PARAM}}/$(COREBOOT_CROSSGCC_PARAM)/" | \
 		$(DOCKER) build -t coreboot/coreboot-sdk:$(COREBOOT_CONTAINER_VERSION) -
 
 upload-coreboot-sdk: test-docker-login

util/docker/coreboot-sdk/Dockerfile

@@ -75,7 +75,7 @@ RUN \
 	git clone https://review.coreboot.org/coreboot && \
 	cd coreboot/util/crossgcc && \
 	git checkout {{DOCKER_COMMIT}} && \
-	make all_without_gdb \
+	make {{CROSSGCC_PARAM}} \
 		BUILD_LANGUAGES=c,ada CPUS=$(nproc) DEST=/opt/xgcc && \
 	cd /root && \
 	rm -rf coreboot