drm/amdgpu: Fix minmax warning

Fix minmax warning by using min_t() macro and explicitly specifying
the assignment type.

Cc: Alex Deucher <Alexander.Deucher@amd.com>
Signed-off-by: Luben Tuikov <luben.tuikov@amd.com>
Reviewed-by: Alex Deucher <Alexander.Deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/pm/swsmu/smu13/smu_v13_0.c

@@ -1436,7 +1436,9 @@ static int smu_v13_0_irq_process(struct amdgpu_device *adev,
 			case 0x8:
 				high = smu->thermal_range.software_shutdown_temp +
 					smu->thermal_range.software_shutdown_temp_offset;
-				high = min(SMU_THERMAL_MAXIMUM_ALERT_TEMP, high);
+				high = min_t(typeof(high),
+					     SMU_THERMAL_MAXIMUM_ALERT_TEMP,
+					     high);
 				dev_emerg(adev->dev, "Reduce soft CTF limit to %d (by an offset %d)\n",
 							high,
 							smu->thermal_range.software_shutdown_temp_offset);
@@ -1449,7 +1451,8 @@ static int smu_v13_0_irq_process(struct amdgpu_device *adev,
 				WREG32_SOC15(THM, 0, regTHM_THERMAL_INT_CTRL, data);
 				break;
 			case 0x9:
-				high = min(SMU_THERMAL_MAXIMUM_ALERT_TEMP,
+				high = min_t(typeof(high),
+					     SMU_THERMAL_MAXIMUM_ALERT_TEMP,
 					     smu->thermal_range.software_shutdown_temp);
 				dev_emerg(adev->dev, "Recover soft CTF limit to %d\n", high);