package/dhcpcd: bump version to 9.1.4
Also separate the fields in the hash file by two spaces and change the
hash of the license file (copyright message changed from 2019 to 2020).
Signed-off-by: Sergio Prado <sergio.prado@e-labworks.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>