kernel_patch_verify: provide a summary log at the very top of report

I am just tired of scrolling to see what the status of each patch is.

Horrible feeling when you have to look through 40 odd patches in a
series. instead, get a quick feel of what went right and wrong.

only the fail tests are listed...

Signed-off-by: Nishanth Menon <nm@ti.com>
README: cosmetic cleanups

typos.. and one more reading later.. a little more beautification

Signed-off-by: Nishanth Menon <nm@ti.com>