Fix compile errors with debug enabled

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3039 42af7a65-404d-4744-a932-0658087f49c3

arch/avr/src/at91uc3/at91uc3_irq.c

@@ -321,7 +321,7 @@ unsigned int avr32_intirqno(unsigned int level)
           mask <<= 1;
         }
 
-       lldbg("Spurious interrupt: group=%d IRR=%08x\n", group, IRR);
+       lldbg("Spurious interrupt: group=%d IRR=%08x\n", group, irr);
        return -ENODEV;
     }