kfdtest: Implement SuspendAndWakeUp()

Change-Id: I16384cd0ca35f15841344ded4d4237a0a862a934
Signed-off-by: Yong Zhao <Yong.Zhao@amd.com>

tests/kfdtest/src/LinuxOSWrapper.cpp

@@ -87,8 +87,22 @@ HSAuint64 GetSystemTickCountInMicroSec() {
 }
 
 bool SuspendAndWakeUp() {
-    // TODO: Implement
-    return false;
+    printf("Please press any key after the system suspends....\n");
+
+    // Use "sudo apt install pm-utils" to install the "pm-suspend"
+    int ret = system("sudo pm-suspend");
+
+    if (ret == -1) {
+        printf("The system linux command could not be run!\n");
+        return false;
+    } else {
+        if (WEXITSTATUS(ret)) {
+            printf("Use 'sudo apt install pm-utils' to install 'pm-suspend' on Ubuntu\n");
+            return false;
+        }
+    }
+
+    return true;
 }
 
 void AcquirePrivilege(OS_PRIVILEGE priv) {