hfsplus: fix warning issue in inode.c

hfsplus: fix warning issue in inode.c

This patch fixes the sparse warning issue in inode.c
by adding static to hfsplus_symlink_inode_operations
and hfsplus_special_inode_operations declarations.

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202601291957.bunRsD8R-lkp@intel.com/
Signed-off-by: Viacheslav Dubeyko <slava@dubeyko.com>
cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
cc: Yangtao Li <frank.li@vivo.com>
cc: linux-fsdevel@vger.kernel.org
Link: https://lore.kernel.org/r/20260129195442.594884-1-slava@dubeyko.com
Signed-off-by: Viacheslav Dubeyko <slava@dubeyko.com>