target-arm: Correct Cortex-A57 ISAR5 and AA64ISAR0 ID register values

We implement the crypto extensions but were incorrectly reporting
ID register values for the Cortex-A57 which did not advertise
crypto. Use the correct values as described in the TRM.
With this fix Linux correctly detects presence of the crypto
features and advertises them in /proc/cpuinfo.

Reported-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 1408718660-7295-1-git-send-email-peter.maydell@linaro.org
Cc: qemu-stable@nongnu.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
(cherry picked from commit c379621)
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>

target-arm/cpu64.c

@@ -123,9 +123,10 @@ static void aarch64_a57_initfn(Object *obj)
     cpu->id_isar2 = 0x21232042;
     cpu->id_isar3 = 0x01112131;
     cpu->id_isar4 = 0x00011142;
+    cpu->id_isar5 = 0x00011121;
     cpu->id_aa64pfr0 = 0x00002222;
     cpu->id_aa64dfr0 = 0x10305106;
-    cpu->id_aa64isar0 = 0x00010000;
+    cpu->id_aa64isar0 = 0x00011120;
     cpu->id_aa64mmfr0 = 0x00001124;
     cpu->clidr = 0x0a200023;
     cpu->ccsidr[0] = 0x701fe00a; /* 32KB L1 dcache */