thermal: cpu_cooling: remove compiler warning

level will be used only if GET_FREQ mode is requested.
There is no potential harm with current code. But for
cleaning the compilation log, this patch initializes
level to zero.
Signed-off-by: Eduardo Valentin <eduardo.valentin@ti.com>
Acked-by: Amit Daniel Kachhap <amit.daniel@samsung.com>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>

drivers/thermal/cpu_cooling.c

@@ -127,7 +127,7 @@ static int get_property(unsigned int cpu, unsigned long input,
 	unsigned int* output, enum cpufreq_cooling_property property)
 {
 	int i, j;
-	unsigned long max_level = 0, level;
+	unsigned long max_level = 0, level = 0;
 	unsigned int freq = CPUFREQ_ENTRY_INVALID;
 	int descend = -1;
 	struct cpufreq_frequency_table *table =