[MIPS] Alchemy: Add au1500 reserved interrupt

In the conversion done in the commits

  95c4eb3ef4484ca85da5c98780d358cffd546b90
  9d360ab4a7568a8d177280f651a8a772ae52b9b9

  [MIPS] Alchemy: Renumber interrupts so irq_cpu can work.

one reserved interrupt on au1500 was missed. this broke the au1000 ethernet
driver.

Signed-off-by: Bruno Randolf <br1@einfach.org>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
diff --git a/include/asm-mips/mach-au1x00/au1000.h b/include/asm-mips/mach-au1x00/au1000.h
index 1b5064d..0d302ba 100644
--- a/include/asm-mips/mach-au1x00/au1000.h
+++ b/include/asm-mips/mach-au1x00/au1000.h
@@ -615,6 +615,7 @@
 	AU1000_RTC_MATCH1_INT,
 	AU1000_RTC_MATCH2_INT,
 	AU1500_PCI_ERR_INT,
+	AU1500_RESERVED_INT,
 	AU1000_USB_DEV_REQ_INT,
 	AU1000_USB_DEV_SUS_INT,
 	AU1000_USB_HOST_INT,