Sayanta Pattanayak authored Jan 22, 2021 and Thomas Abraham committed Jan 25, 2021

Add a new document that explains the procedure to validate uefi secure
boot on the Neoverse reference design platforms.

Signed-off-by: Sayanta Pattanayak <sayanta.pattanayak@arm.com>
Change-Id: Ifb2d5e0225a0a448273c111dcfc96a6d5d06b2cb