shell_and_utils: add vendor shell and toybox targets

Bug: 36463595
Test: Build and boot.

Change-Id: I245d1755546fa597e941badce251c2e8293e998e
Signed-off-by: Sandeep Patil <sspatil@google.com>
(cherry picked from commit 52b20877dc5c9dfcc7ba995c916490072e066b7b)
1 file changed