add more common build tools to the kernel prebuilts

 bc
 bison
 diff
 expr
 find
 flex
 grep
 m4
 make
 nproc
 realpath

Bug: 135922132
Change-Id: I3fc3c17e842160f1479f6fbe66e79fb3b0d16982
Signed-off-by: Matthias Maennich <maennich@google.com>
11 files changed