change execution mode

Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>
diff --git a/cpuhotplug/1_sanity_check.sh b/cpuhotplug/1_sanity_check.sh
old mode 100644
new mode 100755
diff --git a/cpuhotplug/z_sanity_check.sh b/cpuhotplug/z_sanity_check.sh
old mode 100644
new mode 100755