qemu_command.c: move DISK_BUS_SATA validation to qemu_validate.c

qemu_command.c: move DISK_BUS_SATA validation to qemu_validate.c

A few tweaks were made during the move:

- the error messages were changed to mention 'sata controller'
instead of 'ide controller';

- a check for address type 'drive' was added like it is done
with other bus types. The error message of qemuxml2argdata was
updated to reflect that now, instead of erroring it out from the
common code in virDomainDiskDefValidate(), we're failing earlier
with a different error message.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com>