PPC: Bump qemu-system-ppc to 64-bit physical address space

Some 32-bit PPC CPUs can use up to 36 bit of physical address space.
Treat them accordingly in the qemu-system-ppc binary type.
Signed-off-by: NAlexander Graf <agraf@suse.de>

configure

@@ -3309,7 +3309,7 @@ case "$target_arch2" in
   ;;
   ppc)
     gdb_xml_files="power-core.xml power-fpu.xml power-altivec.xml power-spe.xml"
-    target_phys_bits=32
+    target_phys_bits=64
     target_nptl="yes"
     target_libs_softmmu="$fdt_libs"
   ;;

target-ppc/cpu.h

@@ -66,7 +66,7 @@
 #define TARGET_PAGE_BITS 12
 #endif /* defined(TARGET_PPCEMB) */
 
-#define TARGET_PHYS_ADDR_SPACE_BITS 32
+#define TARGET_PHYS_ADDR_SPACE_BITS 36
 #define TARGET_VIRT_ADDR_SPACE_BITS 32
 
 #endif /* defined (TARGET_PPC64) */