kselftests: fix up run_kselftest.sh due to spurious lines

run_kselftests.sh contains randomly spurious lines starting by "make[1]:".
The way the script is generated is most likely broken.
Until, we've got a proper fix, get rid of the lines after the generated
script is installed.

Signed-off-by: Fathi Boudra <fathi.boudra@linaro.org>
Signed-off-by: Denys Dmytriyenko <denys@ti.com>

recipes-kernel/kselftests/kselftests_4.9.bb

@@ -72,6 +72,8 @@ do_compile () {
 do_install () {
 	oe_runmake install
 	chown -R root:root ${D}
+	# fixup run_kselftest.sh due to spurious lines starting by "make[1]:"
+	sed -i '/^make/d' ${D}${bindir}/kselftests/run_kselftest.sh
 }
 
 PACKAGE_BEFORE_PN = " \