sstatesig: Optimise get_taskhash for hashequiv
With hashequiv the get_taskhash function is called much more regularly
and contains expensive operations. This these don't change based upon
hash in a given build, improve the caching within the function to
reduce overhead.
(From OE-Core rev:
de98cfe3cde4b8d5f4b163b5fba3f129651ef06a)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Signed-off-by: Mark Hatle <mark.hatle@kernel.crashing.org>
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
