lshw: add upstream patch to fix build on Blackfin

On Blackfin, the build fails due to the use of the L suffix instead of
LL. To fix this, this commit adds an upstream patch from the project
Github repository.

Fixes:

  http://autobuild.buildroot.org/results/6d7d2034836e0d8705bba2f2597d3e1cde2c43b8/



Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>