Avoid cpu_physical_memory_rw() with a constant is_write argument

This commit was produced with the included Coccinelle script
scripts/coccinelle/exec_rw_const.

Inspired-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
diff --git a/target/i386/hax-all.c b/target/i386/hax-all.c
index 38936d7..f9c83ff 100644
--- a/target/i386/hax-all.c
+++ b/target/i386/hax-all.c
@@ -376,8 +376,8 @@
          *  hft->direction == 2: gpa ==> gpa2
          */
         uint64_t value;
-        cpu_physical_memory_rw(hft->gpa, &value, hft->size, false);
-        cpu_physical_memory_rw(hft->gpa2, &value, hft->size, true);
+        cpu_physical_memory_read(hft->gpa, &value, hft->size);
+        cpu_physical_memory_write(hft->gpa2, &value, hft->size);
     }
 
     return 0;