cr50_rma_open: fix version check
cr50_rma_open: fix version check

BUG=none
BRANCH=none
TEST=script works with a cr50 running 0.6.2

Change-Id: I14cfd8d90bff40843493d22576307421524d3350
Signed-off-by: Mary Ruthven <81380f3403fed74252e92df3ed012a1819ec6296@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2207571
Reviewed-by: Wai-Hong Tam <04b587fdf5845741a0c5a8b9cd59ca72d73ef8fc@google.com>

coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec,coreboot/chrome-ec