vboot: do not check for VBSD_HONOR_VIRT_DEV_SWITCH

As part of chromium:942901, physical dev switch functionality
is being deprecated.

As such, we no longer need to specify the flag
VBSD_HONOR_VIRT_DEV_SWITCH -- the virtual dev switch should
always be honoured.

Additionally, there is no longer a need to check this flag
when looking up the value for crossystem devsw_cur.

This constant will be marked as deprecated in a subsequent

BUG=b:124141368, b:124192753, chromium:942901
TEST=Build locally
TEST=make clean && make runtests
TEST=make clean && COV=1 make coverage && make coverage_html

Change-Id: Ib1ab86d79b039650136f1038c23175f5990895db
Signed-off-by: Joel Kitching <kitching@google.com>
Reviewed-on: https://chromium-review.googlesource.com/1526070
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Joel Kitching <kitching@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
7 files changed