sdhci: Fix 64-bit ADMA2

The 64-bit ADMA address is not converted to the cpu endianes correctly.
This patch fixes the issue and uses a valid mask for the attribute data.
Signed-off-by: NSai Pavan Boddu <saipava@xilinx.com>
[AF: Re-write commit message]
Reviewed-by: NAlistair Francis <alistair.francis@xilinx.com>
Message-Id: <20180208164818.7961-13-f4bug@amsat.org>

hw/sd/sdhci.c

@@ -667,8 +667,8 @@ static void get_adma_description(SDHCIState *s, ADMADescr *dscr)
         dscr->length = le16_to_cpu(dscr->length);
         dma_memory_read(s->dma_as, entry_addr + 4,
                         (uint8_t *)(&dscr->addr), 8);
-        dscr->attr = le64_to_cpu(dscr->attr);
-        dscr->attr &= 0xfffffff8;
+        dscr->addr = le64_to_cpu(dscr->addr);
+        dscr->attr &= (uint8_t) ~0xC0;
         dscr->incr = 12;
         break;
     }