lsof: bump to version 4.87

And install to /usr/bin/lsof rather than /bin/lsof otherwise we still
keep busybox lsof.

[Thomas: fix patch numbering, two patches had the 0001 sequence
number.]

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>