[PATCH 09/16] irqchip: irq-xtensa-mx: include header for missing prototype

[Randy Dunlap]

Add <linux/irqchips/xtensa-mx.h> to provide the function prototype to
prevent a build warning:

drivers/irqchip/irq-xtensa-mx.c:166:12: warning: no previous prototype for 'xtensa_mx_init_legacy' [-Wmissing-prototypes]
  166 | int __init xtensa_mx_init_legacy(struct device_node *interrupt_parent)

Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
Cc: Chris Zankel <chris@xxxxxxxxxx>
Cc: Max Filippov <jcmvbkbc@xxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Marc Zyngier <maz@xxxxxxxxxx>
---
 drivers/irqchip/irq-xtensa-mx.c |    1 +
 1 file changed, 1 insertion(+)

diff -- a/drivers/irqchip/irq-xtensa-mx.c b/drivers/irqchip/irq-xtensa-mx.c
--- a/drivers/irqchip/irq-xtensa-mx.c
+++ b/drivers/irqchip/irq-xtensa-mx.c
@@ -12,6 +12,7 @@
 #include <linux/irqdomain.h>
 #include <linux/irq.h>
 #include <linux/irqchip.h>
+#include <linux/irqchip/xtensa-mx.h>
 #include <linux/of.h>
 
 #include <asm/mxregs.h>