drivers: ufs: remove unused ufs_post_bind() declaration

drivers: ufs: remove unused ufs_post_bind() declaration

Commit 067c1b033282 ("ufs: Call ufs_scsi_bind() from uclass .post_bind")
inlined ufs_scsi_bind() into ufs_post_bind() as trivial
device_bind_driver() call.

ufs_scsi_bind() is no longer referenced anywhere in the codebase, so
drop its declaration from include/ufs.h.

Drivers used to include <ufs.h> to include prototype of ufs_scsi_bind()
function, so we can now safely remove such includes.

Fixes: 067c1b033282 ("ufs: Call ufs_scsi_bind() from uclass .post_bind")
Signed-off-by: Julien Stephan <jstephan@baylibre.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patch.msgid.link/20260203-cleanup-ufs-header-v1-1-4c10424485f0@baylibre.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>