package/dhcpcd: fix pid path

From the README:
    dhcpcd-9 defaults the run directory to `/var/run/dhcpcd` instead of
    `/var/run` and the prefix of dhcpcd has been removed from the files.

Make it so.

Signed-off-by: Konstantin Menyaev <KAMenyaev@sberdevices.ru>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
(cherry picked from commit f73718ce5efe2cfda8bd3c8fc7cc72e30b2b10f1)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/dhcpcd/S41dhcpcd

@@ -5,7 +5,7 @@
 
 DAEMON=/sbin/dhcpcd
 CONFIG=/etc/dhcpcd.conf
-PIDFILE=/var/run/dhcpcd.pid
+PIDFILE=/var/run/dhcpcd/pid
 
 [ -f $CONFIG ] || exit 0
 

package/dhcpcd/dhcpcd.service

@@ -5,7 +5,7 @@ After=network.target
 [Service]
 Type=forking
 EnvironmentFile=-/etc/default/dhcpcd
-PIDFile=/run/dhcpcd.pid
+PIDFile=/run/dhcpcd/pid
 ExecStart=/sbin/dhcpcd $DAEMON_ARGS
 Restart=always