target-ppc: add signed fields to ppc_avr_t.

Signed-off-by: NNathan Froyd <froydnj@codesourcery.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6042 c046a42c-6fe2-441c-8c8c-71466251a162

target-ppc/cpu.h

@@ -311,6 +311,9 @@ union ppc_avr_t {
     uint8_t u8[16];
     uint16_t u16[8];
     uint32_t u32[4];
+    int8_t s8[16];
+    int16_t s16[8];
+    int32_t s32[4];
     uint64_t u64[2];
 };