perf/cxlpmu: Remove unintended newline from IRQ name format string

The IRQ name format string used in devm_kasprintf() mistakenly included
a newline character "\n".
This could lead to confusing log output or misformatted names in sysfs
or debug messages.

This fix removes the newline to ensure proper IRQ naming.

Signed-off-by: Alok Tiwari <[e-mail]>
Reviewed-by: Jonathan Cameron <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]
Signed-off-by: Will Deacon <[e-mail]>

drivers/perf/cxl_pmu.c

···
 		return rc;
 	irq = rc;
 
-	irq_name = devm_kasprintf(dev, GFP_KERNEL, "%s_overflow\n", dev_name);
+	irq_name = devm_kasprintf(dev, GFP_KERNEL, "%s_overflow", dev_name);
 	if (!irq_name)
 		return -ENOMEM;