fix mmap compile error.

mmap/fs_rammap.c:81:39: error: expected ‘)’ before ‘PRIdOFF’
   81 |       ferr("ERRORL Seek to position %"PRIdOFF" failed\n", fpos);
      |                                       ^~~~~~~
mmap/fs_rammap.c:81:12: warning: spurious trailing ‘%’ in format [-Wformat=]
   81 |       ferr("ERRORL Seek to position %"PRIdOFF" failed\n", fpos);
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~
mmap/fs_rammap.c:81:37: note: format string is defined here
   81 |       ferr("ERRORL Seek to position %"PRIdOFF" failed\n", fpos);
      |                                     ^
In file included from mmap/fs_rammap.c:30:
mmap/fs_rammap.c:98:51: error: expected ‘)’ before ‘PRIdOFF’
   98 |               ferr("ERROR: Write failed: offset=%"PRIdOFF" nwrite=%zd\n",
      |                                                   ^~~~~~~
mmap/fs_rammap.c:98:20: warning: spurious trailing ‘%’ in format [-Wformat=]
   98 |               ferr("ERROR: Write failed: offset=%"PRIdOFF" nwrite=%zd\n",
      |                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
mmap/fs_rammap.c:98:49: note: format string is defined here
   98 |               ferr("ERROR: Write failed: offset=%"PRIdOFF" nwrite=%zd\n",

Signed-off-by: zhangshoukui <[email protected]>

fs/mmap/fs_rammap.c

@@ -29,6 +29,7 @@
 #include <assert.h>
 #include <debug.h>
 #include <errno.h>
+#include <inttypes.h>
 #include <string.h>
 #include <unistd.h>