[BUG][BDW][HSW] QEMU boot test failed with GCC 10 for hsw bdw

[fredoh9]

Describe the bug

After upgrading GCC 10 (#3880), QEMU boot test failed for bdw, hsw.
Current QEMU version is QEMU 4.1.93.

To Reproduce

docker pull thesofproject/sof
#20210228 has GCC 10 toolchains
docker tag thesofproject/sof:20210228 sof

cd SOF_ROOT
./scripts/docker-run.sh ./scripts/xtensa-build-all.sh -a -r
#run QEMU boot test for all or specify bdw bsw
./scripts/docker-qemu.sh ../sof.git/scripts/qemu-check.sh

Reproduction Rate
100%

Expected behavior
QEMU boot test should be passed for all platforms

Screenshots or console output
QEMU_boot_failure_bsw_bdw.txt

[lgirdwood]

@fredoh9 can you regenerate docker SDK now. It was a bug in the xtensa overlay, now fixed.

[fredoh9]

I will re-generate docker image and check again. If all works fine, I will switch to GCC 10 toolchains over this weekends.

[fredoh9]

I generated new Docker image and am able to verify it. New label is pushed, thesofproject/sof:20210326.
I will switch this image to latest in this weekends.

[fredoh9]

After upgrading the docker image, I closely monitored any error. It has worked fine.