lshal: show VINTF column by default.

A HAL can't be retrieved unless it is in the VINTF manifest. This
design decision was made so that people add HALs to the manifest as
early as possible (this makes sure that the manifest is accurate on
a change by change basis).

A common problem people face is seeing a HAL in lshal, but because
of the above, it can't be retreived. Currently, in order to see
manifest information, you either have to dig into the lshal settings
or dig into the filesystem. Since one of the most common debugging
steps for a HAL is to check lshal for the HAL, having the information
right here will help. Even though it doesn't explicitly say what the
implications of 'FM' or 'DM' are, reading the lshal help gives a
reasonable idea of this, and when a snippet of lshal is shown (either
in a bugreport/email etc), it will contain the information required
to diagnose the issue.

This CL also fixes a couple bits of documentation in lshal and adjusts
the formatting of the output slightly to break up table descriptions
from the output.

Change-Id: I2bdc08a8b48b8b78a4b143cc4a7cfdfbef62622d
Fixes: 120871371
Test: lshal (manual)