chromeos-tpm-recovery: Quote local variables

The strings in these variables usually don't contain any spaces, but on
some non-Google boards (e.g. Intel RVP) they do, so let's follow the
usual shell style and quote all the things.

BRANCH=none
BUG=b:202870010
TEST=None

Signed-off-by: Julius Werner <jwerner@chromium.org>
Change-Id: I90fac5c605c38eec704df0241d822a19210bfdf9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/vboot_reference/+/3221956
Reviewed-by: Andrey Pronin <apronin@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@chromium.org>
1 file changed