bitbake: runqueue: Fix data being written into siginfo/sigdata files

bitbake: runqueue: Fix data being written into siginfo/sigdata files

The way hash_deps was being generated was different to the way siggen generated
the data internally which lead to seemingly different sigdata/siginfo files
for the same checksum. The -S output correct but the files written during
builds contained superflous data which would look like a difference.

This patch removes the badly duplicated data and uses it from the source
which ensures its consistent.

(Bitbake rev: e6d5e925c402cd2cc7ee034e9de4cc6df8944a34)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>