powerpc/xive: fix repeated words in comments

Delete the redundant word 'set'.

Signed-off-by: Jilin Yuan <yuanjilin@cdjrlc.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20220831004706.35280-1-yuanjilin@cdjrlc.com

arch/powerpc/sysdev/xive/common.c

@@ -783,7 +783,7 @@ static int xive_irq_set_type(struct irq_data *d, unsigned int flow_type)
 	 * the corresponding descriptor bits mind you but those will in turn
 	 * affect the resend function when re-enabling an edge interrupt.
 	 *
-	 * Set set the default to edge as explained in map().
+	 * Set the default to edge as explained in map().
 	 */
 	if (flow_type == IRQ_TYPE_DEFAULT || flow_type == IRQ_TYPE_NONE)
 		flow_type = IRQ_TYPE_EDGE_RISING;