target-ppc: xer access prototypes no more used & implemented

Revision 5500 of the qemu repository removed all code using
ppc_load_xer & ppc_store_xer as well as their implementation.

Another patch fixes it's usage in kvm-userspace for powerpc, but I think
that header can now be cleaned up, therefore this patch to qemu-devel.
Signed-off-by: NChristian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5589 c046a42c-6fe2-441c-8c8c-71466251a162

target-ppc/cpu.h

@@ -724,8 +724,6 @@ target_ulong do_load_sr (CPUPPCState *env, int srnum);
 #endif
 void do_store_sr (CPUPPCState *env, int srnum, target_ulong value);
 #endif /* !defined(CONFIG_USER_ONLY) */
-target_ulong ppc_load_xer (CPUPPCState *env);
-void ppc_store_xer (CPUPPCState *env, target_ulong value);
 void ppc_store_msr (CPUPPCState *env, target_ulong value);
 
 void cpu_ppc_reset (void *opaque);