update missed 'x' operation bit

mcemenu and runmcetest are shell files and should own 'x' bit.

Signed-off-by: Chen Gong <gong.chen@linux.intel.com>
diff --git a/mcemenu b/mcemenu
old mode 100644
new mode 100755
diff --git a/runmcetest b/runmcetest
old mode 100644
new mode 100755