macchanger: bump to version 1.7.0

Switch to github repository to fetch latest version, which also added the
missing license file.

Signed-off-by: Jörg Krause <joerg.krause@embedded.rocks>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/macchanger/macchanger.hash

@@ -1,2 +1,2 @@
 # Locally calculated after checking pgp signature
-sha256	31534f138f1d21fa247be74ba6bef3fbfa47bbcd5033e99bd10c432fe58e51f7	macchanger-1.6.0.tar.gz
+sha256  dae2717c270fd5f62d790dbf80c19793c651b1b26b62c101b82d5fdf25a845bf  macchanger-1.7.0.tar.gz

package/macchanger/macchanger.mk

@@ -4,9 +4,9 @@
 #
 ################################################################################
 
-MACCHANGER_VERSION = 1.6.0
-MACCHANGER_SITE = $(BR2_GNU_MIRROR)/macchanger
+MACCHANGER_VERSION = 1.7.0
+MACCHANGER_SITE = https://github.com/alobbs/macchanger/releases/download/$(MACCHANGER_VERSION)
 MACCHANGER_LICENSE = GPLv2+
-MACCHANGER_LICENSE_FILES = src/main.c
+MACCHANGER_LICENSE_FILES = COPYING
 
 $(eval $(autotools-package))