sata.h: Make all sata/ata drivers include <sata.h>

- block_dev_desc_t says that block_(read|write) take lbaint_t for blkcnt
  not ulong.
- We also move the extern of sata_dev_desc into <sata.h>
- Remove now duplicate declarations from driver-specific headers.

Signed-off-by: Tom Rini <trini@ti.com>
Signed-off-by: Pavel Herrmann <morpheus.ibis@gmail.com>