exec/cpu: Extract page-protection definitions to page-protection.h

Extract page-protection definitions from "exec/cpu-all.h"
to "exec/page-protection.h".

The list of files requiring the new header was generated
using:

$ git grep -wE \
  'PAGE_(READ|WRITE|EXEC|RWX|VALID|ANON|RESERVED|TARGET_.|PASSTHROUGH)'

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240427155714.53669-3-philmd@linaro.org>

linux-user/arm/cpu_loop.c

@@ -24,6 +24,7 @@
 #include "cpu_loop-common.h"
 #include "signal-common.h"
 #include "semihosting/common-semi.h"
+#include "exec/page-protection.h"
 #include "target/arm/syndrome.h"
 
 #define get_user_code_u32(x, gaddr, env)                \

linux-user/elfload.c

@@ -8,6 +8,7 @@
 
 #include "qemu.h"
 #include "user/tswap-target.h"
+#include "exec/page-protection.h"
 #include "user/guest-base.h"
 #include "user-internals.h"
 #include "signal-common.h"

linux-user/mmap.c

@@ -20,6 +20,7 @@
 #include <sys/shm.h>
 #include "trace.h"
 #include "exec/log.h"
+#include "exec/page-protection.h"
 #include "qemu.h"
 #include "user-internals.h"
 #include "user-mmap.h"

linux-user/signal.c

@@ -19,6 +19,7 @@
 #include "qemu/osdep.h"
 #include "qemu/bitops.h"
 #include "gdbstub/user.h"
+#include "exec/page-protection.h"
 #include "hw/core/tcg-cpu-ops.h"
 
 #include <sys/ucontext.h>

linux-user/syscall.c

@@ -25,6 +25,7 @@
 #include "qemu/plugin.h"
 #include "tcg/startup.h"
 #include "target_mman.h"
+#include "exec/page-protection.h"
 #include <elf.h>
 #include <endian.h>
 #include <grp.h>