MLK-14930-1 cmd: sata: Fix sata init and stop issue

MLK-14930-1 cmd: sata: Fix sata init and stop issue

When sata stop is executed, the sata_curr_device is not reset to -1, so
any following sata commands will not initialize the sata again and cause
problem.

Additional, in sata init implementation, the sata_curr_device should be updated,
otherwise sata will be initialized again when doing other sata commands like
read/write/info/part/device.

Signed-off-by: Ye Li <ye.li@nxp.com>
(cherry picked from commit 9bccfd01c618a5d059f332c000c42e5bf39880d9)