target-mips: fix get_physical_address() #if 0 build error

In get_physical_address() is a qemu_log() call inside an #if 0 block.
When enabled the following build error is hit:

target-mips/helper.c In function ‘get_physical_address’:
target-mips/helper.c:220:13: error: format ‘%x’ expects argument of type ‘unsigned int’, but argument 5 has type ‘hwaddr’ [-Werror=format]

Fix the *physical (hwaddr) formatting by using "%"HWADDR_PRIx instead of
TARGET_FMT_lx.
Signed-off-by: NJames Hogan <james.hogan@imgtec.com>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Signed-off-by: NYongbok Kim <yongbok.kim@imgtec.com>
Signed-off-by: NAurelien Jarno <aurelien@aurel32.net>

target-mips/helper.c

@@ -193,7 +193,7 @@ static int get_physical_address (CPUMIPSState *env, hwaddr *physical,
         }
     }
 #if 0
-    qemu_log(TARGET_FMT_lx " %d %d => " TARGET_FMT_lx " %d (%d)\n",
+    qemu_log(TARGET_FMT_lx " %d %d => %" HWADDR_PRIx " %d (%d)\n",
             address, rw, access_type, *physical, *prot, ret);
 #endif