fs: require inode_owner_or_capable for F_SET_RW_HINT

F_SET_RW_HINT controls data placement in the file system and / or
device and should not be available to everyone who can read a given file.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20241122122931.90408-2-hch@lst.de


Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christian Brauner <brauner@kernel.org>