xcompile: Redirect the objdump stderr to /dev/null

On system with clang, "as" is available but "objdump" is not by default.
So if ${gccprefix} is empty, "as" can run successfully and the "objdump"
below might report error. Mask that output.

Change-Id: I9940f069f66e097973ed6138cf3c696087fa5531
Signed-off-by: Zheng Bao <zheng.bao@amd.com>
Signed-off-by: Zheng Bao <fishbaozi@gmail.com>
Reviewed-on: http://review.coreboot.org/11681
Tested-by: build bot (Jenkins)
Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>
Reviewed-by: Alexandru Gagniuc <mr.nuke.me@gmail.com>
Reviewed-by: Martin Roth <martinroth@google.com>

0 files changed, 0 insertions, 0 deletions