PCI: dra7xx: Add missing chained IRQ header inclusion

Driver is using chained_irq_*() APIs, add the respective inclusion.

[kwilczynski: commit log]
Link: https://lore.kernel.org/linux-pci/[email protected]
Signed-off-by: Andy Shevchenko <[email protected]>
Signed-off-by: Krzysztof Wilczyński <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Reviewed-by: Linus Walleij <[email protected]>
Reviewed-by: Manivannan Sadhasivam <[email protected]>

Author: andy-shev

drivers/pci/controller/dwc/pci-dra7xx.c

@@ -13,6 +13,7 @@
 #include <linux/err.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/irqchip/chained_irq.h>
 #include <linux/irqdomain.h>
 #include <linux/kernel.h>
 #include <linux/module.h>