When the EFS data is being packed, the pointer should be at EFS header. After that, it should be at body location. TEST=binary identical test on amd/birman amd/chausie amd/majolica amd/gardenia pcengines/apu2 amd/mandolin Change-Id: Ia81e2bdf9feb02971723f39e7f223b5055807cd8 Signed-off-by: Zheng Bao <fishbaozi@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/73180 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Fred Reitberger <reitbergerfred@gmail.com>