powerpc/powernv/pci.h: delete duplicated word

Drop the repeated word "for".
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200726003809.20454-10-rdunlap@infradead.org

arch/powerpc/platforms/powernv/pci.h

@@ -94,7 +94,7 @@ struct pnv_ioda_pe {
 	 */
 	bool			dma_setup_done;
 
-	/* MSIs. MVE index is identical for for 32 and 64 bit MSI
+	/* MSIs. MVE index is identical for 32 and 64 bit MSI
 	 * and -1 if not supported. (It's actually identical to the
 	 * PE number)
 	 */