This commit moves source code files "/usr/src/ofa_kernel/x86_64/" from
modules package to dev package, only left all ko in modules package.
Also adds postinst, prerm files for dev package and modify postinst,
prerm files for modules package because source files are moved to
the dev package.
Test Plan:
PASS: Build mlnx-ofa_kernel and bnxt_en success for std and rt.
PASS: Build debian ISO and boot up with qemu.
PASS: Install in the lab and boot up success.
Closes-bug: 1975452
Signed-off-by: Jiping Ma <jiping.ma2@windriver.com>
Change-Id: I8ac2ad7968fd73cbdaa74e3556c7740a49db6a08
66e70da1c2