thermal:imx_thermal: enter busywait cooling loop when over max CPU temp

Remove the check for temperature being within the min/max range and enter the
busywait cooling loop whenever the CPU temperature is over the critical temp.
This fixes the issue where if a board was booted at a temp greater than
the CPU temperature max, it would skip the loop and never indicate or try
to address the overtemp issue.

Cc: Ye Li <b37916@freescale.com>
Cc: Jason Liu <r64343@freescale.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>

drivers/thermal/imx_thermal.c

@@ -130,16 +130,12 @@ int imx_thermal_get_temp(struct udevice *dev, int *temp)
 	int cpu_tmp = 0;
 
 	cpu_tmp = read_cpu_temperature(dev);
-	while (cpu_tmp > priv->minc && cpu_tmp < priv->maxc) {
-		if (cpu_tmp >= priv->critical) {
-			printf("CPU Temperature (%dC) too close to max (%dC)",
-			       cpu_tmp, priv->maxc);
-			puts(" waiting...\n");
-			udelay(5000000);
-			cpu_tmp = read_cpu_temperature(dev);
-		} else {
-			break;
-		}
+	while (cpu_tmp >= priv->critical) {
+		printf("CPU Temperature (%dC) too close to max (%dC)",
+		       cpu_tmp, priv->maxc);
+		puts(" waiting...\n");
+		udelay(5000000);
+		cpu_tmp = read_cpu_temperature(dev);
 	}
 
 	*temp = cpu_tmp;