Fix handling of itanium arch name in QEMU driver

For historical compat we use 'itanium' as the arch name, so
if the QEMU binary suffix is 'ia64' we need to translate it
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>
(cherry picked from commit 3887afbb)

src/qemu/qemu_capabilities.c

@@ -1940,6 +1940,10 @@ qemuCapsPtr qemuCapsNewForBinary(const char *binary)
     tmp = strstr(binary, QEMU_SYSTEM_PREFIX);
     if (tmp) {
         tmp += strlen(QEMU_SYSTEM_PREFIX);
+
+        /* For historical compat we use 'itanium' as arch name */
+        if (STREQ(tmp, "ia64"))
+            tmp = "itanium";
     } else {
         uname_normalize(&ut);
         tmp = ut.machine;