configure: report yasm/nasm presence properly

If the secondary assembler is in use report the proper name

configure

@@ -3103,7 +3103,7 @@ fi
 echo "big-endian                ${bigendian-no}"
 echo "runtime cpu detection     ${runtime_cpudetect-no}"
 if enabled x86; then
-    echo "yasm                      ${yasm-no}"
+    echo "${yasmexe}                      ${yasm-no}"
     echo "MMX enabled               ${mmx-no}"
     echo "MMX2 enabled              ${mmx2-no}"
     echo "3DNow! enabled            ${amd3dnow-no}"