ltp-testsuite: add license info

[Peter: GPLv2 / GPLv2+ mix as pointed out by Arnout]
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>

package/ltp-testsuite/ltp-testsuite.mk

@@ -6,5 +6,7 @@
 LTP_TESTSUITE_VERSION = 20101031
 LTP_TESTSUITE_SOURCE  = ltp-full-$(LTP_TESTSUITE_VERSION).bz2
 LTP_TESTSUITE_SITE    = http://downloads.sourceforge.net/project/ltp/LTP%20Source/ltp-$(LTP_TESTSUITE_VERSION)
+LTP_TESTSUITE_LICENSE = GPLv2 GPLv2+
+LTP_TESTSUITE_LICENSE_FILES = COPYING
 
 $(eval $(autotools-package))