linux-user: Don't treat AArch64 cpu names specially

32-bit ARM has a lot of different names for different types of CPUs it supports.
On AArch64, we don't have this, so we really don't want to execute the 32-bit
logic. Stub it out for AArch64 linux-user guests.

Signed-off-by: Alexander Graf <agraf@suse.de>
Signed-off-by: John Rigby <john.rigby@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1378235544-22290-13-git-send-email-peter.maydell@linaro.org
Message-id: 1368505980-17151-7-git-send-email-john.rigby@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

linux-user/cpu-uname.c

@@ -30,7 +30,8 @@
  * return here */
 const char *cpu_to_uname_machine(void *cpu_env)
 {
-#ifdef TARGET_ARM
+#if defined(TARGET_ARM) && !defined(TARGET_AARCH64)
+
     /* utsname machine name on linux arm is CPU arch name + endianness, e.g.
      * armv7l; to get a list of CPU arch names from the linux source, use:
      *     grep arch_name: -A1 linux/arch/arm/mm/proc-*.S