From: 	James.Smart@Emulex.Com

This patch deprecates the use of device_for_each_child() with stargets.
The reasoning behind this is due to issues regarding:
      Semaphores that device_for_each_child() takes
      Implicit assumptions that each child is an sdev device.

The patch adds a new helper function, starget_for_each_device(), and
replaces all previous uses of device_for_each_child().
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>