fix(versal-net): enable wake interrupt during client suspend

Wakeup interrupt should be set during power down sequence to wake
processor. So enable wakeup interrupt during power down sequence.

Signed-off-by: Jay Buddhabhatti <jay.buddhabhatti@amd.com>
Change-Id: I1154495c25e0468496f6e112996fd182aa516d88

plat/xilinx/versal_net/pm_service/pm_client.c

@@ -170,6 +170,12 @@ void pm_client_suspend(const struct pm_proc *proc, uint32_t state)
 	/* Enable power down interrupt */
 	mmio_write_32(APU_PCIL_CORE_X_IEN_POWER_REG(cpu_id),
 		      APU_PCIL_CORE_X_IEN_POWER_MASK);
+	/* Clear wakeup interrupt status before enabling */
+	mmio_write_32(APU_PCIL_CORE_X_ISR_WAKE_REG(cpu_id),
+		      APU_PCIL_CORE_X_ISR_WAKE_MASK);
+	/* Enable wake interrupt */
+	mmio_write_32(APU_PCIL_CORE_X_IEN_WAKE_REG(cpu_id),
+		      APU_PCIL_CORE_X_IEN_WAKE_MASK);
 
 	bakery_lock_release(&pm_client_secure_lock);
 }