hw/dma/pl080: Fix bad bit mask (PL080_CONF_M1 | PL080_CONF_M1)

The M1 and M2 bits are both used for configuring the endianness
of the AHB master interfaces, so the second PL080_CONF_M1 should
be PL080_CONF_M2 instead.

Buglink: https://bugs.launchpad.net/qemu/+bug/1631773


Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-id: 1476274451-26567-1-git-send-email-thuth@redhat.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

hw/dma/pl080.c

@@ -351,7 +351,7 @@ static void pl080_write(void *opaque, hwaddr offset,
         break;
     case 12: /* Configuration */
         s->conf = value;
-        if (s->conf & (PL080_CONF_M1 | PL080_CONF_M1)) {
+        if (s->conf & (PL080_CONF_M1 | PL080_CONF_M2)) {
             qemu_log_mask(LOG_UNIMP,
                           "pl080_write: Big-endian DMA not implemented\n");
         }