kernel_patch_verify: deny if i start running a test on my current branch

Ok, I still make new types of mistakes.. so here we go with another
test and base branch provided to script is the same.. umm.. that means,
I really need to sleep ;)

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

everytime I look, I find another.. so expect more patches ;)

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