style: Fix coding style violations in nuttx-apps

Fix various coding style issues including:
- Case statement formatting
- Include placement and ordering
- Whitespace issues
- Long line formatting
- Bracket alignment

Affected modules:
- audioutils, examples, include
- netutils, system

Signed-off-by: Huang Qi <huangqi3@xiaomi.com>

examples/mount/ramdisk.c

@@ -97,8 +97,8 @@ int create_ramdisk(void)
   ret = mkfatfs(g_source, &g_fmt);
   if (ret < 0)
     {
-      printf("create_ramdisk: Failed to create FAT filesystem on ramdisk at %s\n",
-             g_source);
+      printf("create_ramdisk: Failed to create FAT filesystem on "
+             "ramdisk at %s\n", g_source);
       return ret;
     }