lrzsz: add license info and fix typo

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

package/lrzsz/lrzsz.mk

@@ -6,8 +6,9 @@
 
 LRZSZ_VERSION = 0.12.20
 LRZSZ_SITE = http://www.ohse.de/uwe/releases
-
-LRZSR_CONF_OPT = --disable-timesync
+LRZSZ_CONF_OPT = --disable-timesync
+LRZSZ_LICENSE = GPLv2+
+LRZSZ_LICENSE_FILES = COPYING
 
 define LRZSZ_POST_CONFIGURE_HOOKS
 	$(SED) "s/-lnsl//;" $(@D)/src/Makefile