scsi: force well-known logical unit type

Some well-known Logical Units (LUs) might not specify the correct
peripheral device type in the inquiry response which leads to binding
with other drivers like scsi disk drivers and hence cause delays
during device detection as most of the initialization commands fail.

Since such well-known LUs are known only to respond to special commands
force the type to 0x1e (well-known logical unit type) so that respective
type drivers will handle them.

Change-Id: Iaf85eedba8c214cdcf32d207e4913cb72eef53f4
Signed-off-by: Sujit Reddy Thumma <sthumma@codeaurora.org>