openssh: don't use a custom libexec dir

sftp expects to find sftp-server in the standard (/usr/libexec) location,
so ensure it gets installed there.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/openssh/openssh.mk

@@ -7,7 +7,7 @@
 OPENSSH_VERSION = 6.2p1
 OPENSSH_SITE = http://ftp.openbsd.org/pub/OpenBSD/OpenSSH/portable
 OPENSSH_CONF_ENV = LD="$(TARGET_CC)" LDFLAGS="$(TARGET_CFLAGS)"
-OPENSSH_CONF_OPT = --libexecdir=/usr/lib --disable-lastlog --disable-utmp \
+OPENSSH_CONF_OPT = --disable-lastlog --disable-utmp \
 		--disable-utmpx --disable-wtmp --disable-wtmpx --disable-strip
 
 OPENSSH_DEPENDENCIES = zlib openssl