thermal/drivers/qcom/temp-alarm: Register thermal zones as hwmon sensors

Register thermal zones as hwmon sensors to let userspace read
temperatures using standard hwmon interface.

Signed-off-by: Dmitry Baryshkov <[e-mail]>
Reviewed-by: Bhupesh Sharma <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Daniel Lezcano <[e-mail]>

drivers/thermal/qcom/qcom-spmi-temp-alarm.c

···
 #include <linux/thermal.h>
 
 #include "../thermal_core.h"
+#include "../thermal_hwmon.h"
 
 #define QPNP_TM_REG_DIG_MAJOR		0x01
 #define QPNP_TM_REG_TYPE		0x04
···
 		dev_err(&pdev->dev, "init failed\n");
 		return ret;
 	}
+
+	if (devm_thermal_add_hwmon_sysfs(chip->tz_dev))
+		dev_warn(&pdev->dev,
+			 "Failed to add hwmon sysfs attributes\n");
 
 	ret = devm_request_threaded_irq(&pdev->dev, irq, NULL, qpnp_tm_isr,
 					IRQF_ONESHOT, node->name, chip);