network-manager: adjust dhclient and dhcpcd directories

dhclient and dhcpcd were moved from /usr/sbin to /sbin for busybox-less
SysV-style init with Debian utilities, so adjust accordingly.

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

package/network-manager/network-manager.mk

@@ -56,11 +56,11 @@ else
 endif
 
 ifeq ($(BR2_PACKAGE_DHCP_CLIENT),y)
-NETWORK_MANAGER_CONF_OPTS += --with-dhclient=/usr/sbin/dhclient
+NETWORK_MANAGER_CONF_OPTS += --with-dhclient=/sbin/dhclient
 endif
 
 ifeq ($(BR2_PACKAGE_DHCPCD),y)
-NETWORK_MANAGER_CONF_OPTS += --with-dhcpcd=/usr/sbin/dhcpcd
+NETWORK_MANAGER_CONF_OPTS += --with-dhcpcd=/sbin/dhcpcd
 endif
 
 # uClibc by default doesn't have backtrace support, so don't use it