dpaa2-switch: add ENDPOINT_CHANGED to the irq_mask

Commit 84cba729 ("dpaa2-switch: integrate the MAC endpoint support")
added support for MAC endpoints in the dpaa2-switch driver but omitted
to add the ENDPOINT_CHANGED irq to the list of interrupt sources. Fix
this by extending the list of events which can raise an interrupt by
extending the mask passed to the dpsw_set_irq_mask() firmware API.

There is no user visible impact even without this patch since whenever a
switch interface is connected/disconnected from an endpoint both events
are set (LINK_CHANGED and ENDPOINT_CHANGED) and, luckily, the
LINK_CHANGED event could actually raise the interrupt and thus get the
MAC/PHY SW configuration started.

Even with this, it's better to just not rely on undocumented firmware
behavior which can change.
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c

@@ -1550,9 +1550,9 @@ static irqreturn_t dpaa2_switch_irq0_handler_thread(int irq_num, void *arg)
 
 static int dpaa2_switch_setup_irqs(struct fsl_mc_device *sw_dev)
 {
+	u32 mask = DPSW_IRQ_EVENT_LINK_CHANGED | DPSW_IRQ_EVENT_ENDPOINT_CHANGED;
 	struct device *dev = &sw_dev->dev;
 	struct ethsw_core *ethsw = dev_get_drvdata(dev);
-	u32 mask = DPSW_IRQ_EVENT_LINK_CHANGED;
 	struct fsl_mc_device_irq *irq;
 	int err;