powerpc/xive: fix repeated words in comments

Delete the redundant word 'set'.

Signed-off-by: Jilin Yuan <[e-mail]>
Signed-off-by: Michael Ellerman <[e-mail]>
Link: https://lore.kernel.org/r/[e-mail]

arch/powerpc/sysdev/xive/common.c

···
 	 * 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;