libvboot_host: Check for undefined symbols

Check the library does not contain undefined vb2 symbols.

BUG=b:124141368, chromium:968464
BRANCH=none
TEST=Check the test pass with FEATURES=test emerge-brya vboot_reference
Revert crrev.com/c/5262229, observe errors:
...
libvboot_host: Unexpected undefined symbols:
vb2_fill_dev_boot_flags
vb2_gbb_read_recovery_key
vb2_secdata_fwmp_init
vb2_secdata_kernel_get
...
Error:
/tmp/portage/.../vboot_reference-9999/.../tests/vhost_reference.sh:
failed with exit code 1

Change-Id: I09bfcf7fa67de171ec581ff9feac48749d24ed41
Signed-off-by: Gwendal Grignou <gwendal@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/5282761
Reviewed-by: Julius Werner <jwerner@chromium.org>
2 files changed