Fix setting cpu frequence without sufficient privileges

src/hardware.cpp

@@ -1127,7 +1127,7 @@ bool HardwareInfo::setCPUFreq ( cpufreq_type cpufreq, int limit ) {
 	}
 	
 	if (cpuFreqAllowed  == 0) {
-		kdError() << "Could not set CPU Freq, this not the needed privileges." << endl;
+		kdError() << "Could not set CPU Freq - insufficient privileges." << endl;
 		return false;
 	}
 	

src/kpowersave.cpp

@@ -1861,7 +1861,7 @@ void kpowersave::setSchemeSettings(){
 	}
 
 	// --> set CPU Freq settings
-	if(hwinfo->supportCPUFreq()) {
+	if(hwinfo->supportCPUFreq() && hwinfo->isCpuFreqAllowed()) {
 		hwinfo->setCPUFreq( settings->cpuFreqPolicy, settings->cpuFreqDynamicPerformance);
 	}
 
@@ -2250,7 +2250,7 @@ void kpowersave::handleResumeSignal() {
 	setAutoDimm(true);
 
 	// reset the CPU Freq Policy ... for more see https://bugzilla.novell.com/show_bug.cgi?id=223164
-	if(hwinfo->supportCPUFreq()) {
+	if(hwinfo->supportCPUFreq() && hwinfo->isCpuFreqAllowed()) {
 		hwinfo->setCPUFreq( settings->cpuFreqPolicy, settings->cpuFreqDynamicPerformance );
 	}