subsystems: migrate includes to <zephyr/...>

In order to bring consistency in-tree, migrate all subsystems code to
the new prefix <zephyr/...>. Note that the conversion has been scripted,
refer to zephyrproject-rtos#45388 for more details.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>

subsys/fs/fcb/fcb.c

@@ -8,12 +8,12 @@
 #include <limits.h>
 #include <stdlib.h>
 
-#include <fs/fcb.h>
+#include <zephyr/fs/fcb.h>
 #include "fcb_priv.h"
 #include "string.h"
 #include <errno.h>
-#include <device.h>
-#include <drivers/flash.h>
+#include <zephyr/device.h>
+#include <zephyr/drivers/flash.h>
 
 uint8_t
 fcb_get_align(const struct fcb *fcb)

subsys/fs/fcb/fcb_append.c

@@ -8,7 +8,7 @@
 #include <stddef.h>
 #include <string.h>
 
-#include <fs/fcb.h>
+#include <zephyr/fs/fcb.h>
 #include "fcb_priv.h"
 
 static struct flash_sector *

subsys/fs/fcb/fcb_elem_info.c

@@ -5,9 +5,9 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-#include <sys/crc.h>
+#include <zephyr/sys/crc.h>
 
-#include <fs/fcb.h>
+#include <zephyr/fs/fcb.h>
 #include "fcb_priv.h"
 
 /*

subsys/fs/fcb/fcb_getnext.c

@@ -7,7 +7,7 @@
 
 #include <stddef.h>
 
-#include <fs/fcb.h>
+#include <zephyr/fs/fcb.h>
 #include "fcb_priv.h"
 
 int

subsys/fs/fcb/fcb_rotate.c

@@ -5,7 +5,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-#include <fs/fcb.h>
+#include <zephyr/fs/fcb.h>
 #include "fcb_priv.h"
 
 int

subsys/fs/fcb/fcb_walk.c

@@ -5,7 +5,7 @@
  * SPDX-License-Identifier: Apache-2.0
  */
 
-#include <fs/fcb.h>
+#include <zephyr/fs/fcb.h>
 #include "fcb_priv.h"
 
 /*