thermal/drivers/brcmstb_thermal: Use max to simplify brcmstb_get_temp

Use max() to simplify brcmstb_get_temp() and improve its readability.
Since avs_tmon_code_to_temp() returns an int, change the data type of
the local variable 't' from long to int.  No functional changes.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Daniel Lezcano <daniel.lezcano@kernel.org>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20260402165616.895305-3-thorsten.blum@linux.dev

Author: toblux

drivers/thermal/broadcom/brcmstb_thermal.c

@@ -16,6 +16,7 @@
 #include <linux/irqreturn.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
+#include <linux/minmax.h>
 #include <linux/module.h>
 #include <linux/of.h>
 #include <linux/platform_device.h>
@@ -154,7 +155,7 @@ static int brcmstb_get_temp(struct thermal_zone_device *tz, int *temp)
 {
 	struct brcmstb_thermal_priv *priv = thermal_zone_device_priv(tz);
 	u32 val;
-	long t;
+	int t;
 
 	val = __raw_readl(priv->tmon_base + AVS_TMON_STATUS);
 
@@ -164,10 +165,7 @@ static int brcmstb_get_temp(struct thermal_zone_device *tz, int *temp)
 	val = (val & AVS_TMON_STATUS_data_msk) >> AVS_TMON_STATUS_data_shift;
 
 	t = avs_tmon_code_to_temp(priv, val);
-	if (t < 0)
-		*temp = 0;
-	else
-		*temp = t;
+	*temp = max(0, t);
 
 	return 0;
 }