src/poky:create-spdx: support line numbers

LIC_FILES_CHKSUM supports begin-/endline for licenses included in
for instance header files. This patch adds support for line numbers
to NO_GENERIC_LICENSE, too.

(From OE-Core rev: 8e7ee19fc9e74cf042880f4bc317782482ba6f66)

Signed-off-by: Denis Osterland-Heim <denis.osterlanddiehl.com>
Signed-off-by: Mathieu Dubois-Briand <mathieu.dubois-briandbootlin.com>
Signed-off-by: Ross Burton <ross.burtonarm.com>

Author: OsterlaD