ide: simplify 'struct ide_taskfile'

Make 'struct ide_taskfile' cover only 8 register values and thus put two such
fields ('tf' and 'hob') into 'struct ide_cmd', dropping unnecessary 'tf_array'
field from it.

This required changing the prototype of ide_get_lba_addr() and ide_tf_dump().

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
[bart: fix setting of ATA_LBA bit for LBA48 commands in __ide_do_rw_disk()]
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
diff --git a/drivers/ide/ide-acpi.c b/drivers/ide/ide-acpi.c
index f0db4d3..77f79d2 100644
--- a/drivers/ide/ide-acpi.c
+++ b/drivers/ide/ide-acpi.c
@@ -318,7 +318,7 @@
 
 		/* convert GTF to taskfile */
 		memset(&cmd, 0, sizeof(cmd));
-		memcpy(&cmd.tf_array[7], gtf, REGS_PER_GTF);
+		memcpy(&cmd.tf.feature, gtf, REGS_PER_GTF);
 		cmd.valid.out.tf = IDE_VALID_OUT_TF | IDE_VALID_DEVICE;
 		cmd.valid.in.tf  = IDE_VALID_IN_TF  | IDE_VALID_DEVICE;