change options for numerical comparision

use directory test option for cpufreq test and add warning message
for hotplug 07 test

Signed-off-by: Carlos Hernandez <ceh@ti.com>
Signed-off-by: Sanjay Singh Rawat <sanjay.rawat@linaro.org>
diff --git a/include/thermal_functions.sh b/include/thermal_functions.sh
index 8a4d627..1f1991f 100644
--- a/include/thermal_functions.sh
+++ b/include/thermal_functions.sh
@@ -181,7 +181,7 @@
 
     local flag=0
     for cpu in $(ls $CPU_PATH | grep "cpu[0-9].*"); do
-	if [ $before_freq_list[$index] != $afterf_req_list[$index] ] ; then
+	if [ $before_freq_list[$index] -ne $afterf_req_list[$index] ] ; then
 	    flag=1	
 	fi
         index=$((index + 1)) 
@@ -275,7 +275,7 @@
         return
     fi
 
-    if [ "$gpu_pid" != 0 ]; then
+    if [ "$gpu_pid" -ne 0 ]; then
 	kill -9 $gpu_pid
     fi
 }