RDMA/ionic: Fix build failure on SPARC due to xchg() operand size

xchg() is used to safely handle the event queue arming.
However SPARC xchg operates only 4B of variable.
Change variable type from bool to int.

Unverified Error/Warning (likely false positive, kindly check if interested):

ERROR: modpost: "__xchg_called_with_bad_pointer" [drivers/infiniband/hw/ionic/ionic_rdma.ko] undefined!

Error/Warning ids grouped by kconfigs:

recent_errors
`-- sparc-allmodconfig
`-- ERROR:__xchg_called_with_bad_pointer-drivers-infiniband-hw-ionic-ionic_rdma.ko-undefined

Fixes: f3bdbd42702c ("RDMA/ionic: Create device queues to support admin operations")
Reported-by: Leon Romanovsky <[e-mail]>
Closes: https://lore.kernel.org/lkml/20250918180750.GA135135@unreal/
Signed-off-by: Abhijit Gangurde <[e-mail]>
Link: https://patch.msgid.link/[e-mail]
Signed-off-by: Leon Romanovsky <[e-mail]>

drivers/infiniband/hw/ionic/ionic_admin.c

···
 				   npolled, 0);
 		queue_work(ionic_evt_workq, &eq->work);
 	} else {
-		xchg(&eq->armed, true);
+		xchg(&eq->armed, 1);
 		ionic_intr_credits(eq->dev->lif_cfg.intr_ctrl, eq->intr,
 				   0, IONIC_INTR_CRED_UNMASK);
 	}
···
 static irqreturn_t ionic_poll_eq_isr(int irq, void *eqptr)
 {
 	struct ionic_eq *eq = eqptr;
-	bool was_armed;
+	int was_armed;
 	u32 npolled;
 
-	was_armed = xchg(&eq->armed, false);
+	was_armed = xchg(&eq->armed, 0);
 
 	if (unlikely(!eq->enable) || !was_armed)
 		return IRQ_HANDLED;
···
 				   npolled, 0);
 		queue_work(ionic_evt_workq, &eq->work);
 	} else {
-		xchg(&eq->armed, true);
+		xchg(&eq->armed, 1);
 		ionic_intr_credits(eq->dev->lif_cfg.intr_ctrl, eq->intr,
 				   0, IONIC_INTR_CRED_UNMASK);
 	}

drivers/infiniband/hw/ionic/ionic_ibdev.h

···
 
 	struct ionic_queue	q;
 
-	bool			armed;
+	int			armed;
 	bool			enable;
 
 	struct work_struct	work;