x86 platform drivers: Build fix for intel_pmic_gpio

Fix an incorrect function name so the driver builds.
Signed-off-by: Matthew Garrett <mjg@redhat.com>

drivers/platform/x86/intel_pmic_gpio.c

@@ -209,7 +209,7 @@ static struct irq_chip pmic_irqchip = {
 	.irq_mask		= pmic_irq_mask,
 	.irq_unmask		= pmic_irq_unmask,
 	.irq_set_type		= pmic_irq_type,
-	.irq_bus_lock		= pmic_irq_buslock,
+	.irq_bus_lock		= pmic_bus_lock,
 	.irq_bus_sync_unlock	= pmic_bus_sync_unlock,
 };