m68knommu: add missing interrupt line definition for UART 2

Signed-off-by:  David Wu <david.wu@arcturusnetworks.com>
Acked-by: Michael Durrant <mdurrant@arcturusnetworks.com>
Acked-by: Oleksandr Zhadan <oleks@arcturusnetworks.com>
Signed-off-by: Greg Ungerer <gerg@uclinux.org>

arch/m68k/include/asm/m532xsim.h

@@ -16,6 +16,7 @@
 #define MCFINT_VECBASE      64
 #define MCFINT_UART0        26          /* Interrupt number for UART0 */
 #define MCFINT_UART1        27          /* Interrupt number for UART1 */
+#define MCFINT_UART2        28          /* Interrupt number for UART2 */
 
 #define MCF_WTM_WCR	MCF_REG16(0xFC098000)