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>
2 files changed